GUJARAT TECHNOLOGICAL UNIVERSITY - mytoolbag.inmytoolbag.in/media/GTUPAPERS/1/2/FIRSTYEAR/EG.pdf · circle and ellipse) with its inclination to one ... of its corners of its base

GUJARAT TECHNOLOGICAL UNIVERSITY

ENGINEERING GRAPHICS (Modified on 4th

Feb 2014)

SUBJECT CODE: 2110013

B.E. 1st YEAR

Type of course: Engineering Science

Prerequisite: Zeal to learn the subject

Rationale: Engineering Drawing is an effective language of engineers. It is the foundation

block which strengthens the engineering & technological structure. Moreover, it is the

transmitting link between ideas and realization.

Teaching and Examination Scheme:

Teaching Scheme Credits Examination Marks Total

Marks L T P C Theory Marks Practical Marks

ESE

(E)

PA

(M)

ESE

Viva (V)

PA

(I)

2 0 4 6 70 30* 30# 20 150 L- Lectures; T- Tutorial/Teacher Guided Student Activity; P- Practical; C- Credit; ESE- End Semester

Examination; PA- Progressive Assessment

Content:

Sr.

No. Topics

Teaching

Hrs.

Module

Weightage

1

Introduction to Engineering Graphics: Drawing

instruments and accessories, BIS – SP 46. Use of plane

scales, Diagonal Scales and Representative Fraction

-

20%

2

Engineering Curves: Classification and application of

Engineering Curves, Construction of Conics, Cycloidal

Curves, Involutes and Spirals along with normal and

tangent to each curve

6

3

Projections of Points and Lines: Introduction to principal

planes of projections, Projections of the points located in

same quadrant and different quadrants, Projections of line

with its inclination to one reference plane and with two

reference planes. True length and inclination with the

reference planes

6

30%

4

Projections of Planes: Projections of planes (polygons,

circle and ellipse) with its inclination to one reference plane

and with two reference planes, Concept of auxiliary plane

method for projections of the plane

6

5

Projections of Solids and Section of Solids: Classification

of solids. Projections of solids (Cylinder, Cone, Pyramid

and Prism) along with frustum with its inclination to one

reference plane and with two reference planes. Section of

such solids and the true shape of the section

6 15%

6 Orthographic Projections: Fundamental of projection

along with classification, Projections from the pictorial - 35%

view of the object on the principal planes for view from

front, top and sides using first angle projection method and

third angle projection method, full sectional view

7

Isometric Projections and Isometric View or Drawing: Isometric Scale, Conversion of orthographic views into

isometric projection, isometric view or drawing

-

Note: Topic No. 1, 6 and 7 of the above syllabus to be covered in Practical Hours.

Reference Books:

1. A Text Book of Engineering Graphics by P.J.Shah S.Chand & Company Ltd., New Delhi

2. Elementary Engineering Drawing by N.D.Bhatt Charotar Publishing House, Anand

3. A text book of Engineering Drawing by R.K.Dhawan, S.Chand & Company Ltd., New

Delhi

4. A text book of Engineering Drawing by P.S.Gill, S.K.Kataria & sons, Delhi

5. Engineering Drawing by B. Agrawal and C M Agrawal, Tata McGraw Hill, New Delhi

Course Outcome:

After learning the course the students should be able to

1. To know and understand the conventions and the methods of engineering drawing.

2. Interpret engineering drawings using fundamental technical mathematics.

3. Construct basic and intermediate geometry.

4. To improve their visualization skills so that they can apply these skills in developing new

products.

5. To improve their technical communication skill in the form of communicative drawings.

6. Comprehend the theory of projection.

List of Practical:

Students are required to prepare drawing sheets on the following topics. Minimum three

problems must be given for sheet number 3 to 8.

1. Practice sheet (which includes dimensioning methods, different types of line, construction

of different polygon, divide the line and angle in parts, use of stencil,)

2. Plane scale and diagonal scale

3. Engineering curves

4. Projection of line and Projection of plane (minimum two problems on each)

5. Projection and section of solid

6. Orthographic projection

7. Isometric projection

Open Ended Problems: Apart from above experiments a group of students has to undertake

one open ended problem/design problem. Few examples of the same are given below.

1. Draw the few problems of above sheets in Google sketch up.

2. Draw the few problems of above sheets in Auto CAD.

3. Prepare the orthographic / isometric views of the working model/toy/game prepared by

the students in the subject of workshop practice using Google sketch up/Auto CAD.

Major Equipments: models and charts on the topics of curriculum

List of Open Source Software/learning website: http://nptel.iitm.ac.in/courses.php

*PA (M): 10 marks for Active Learning Assignments, 20 marks for other methods of PA

ACTIVE LEARNING ASSIGNMENTS: Preparation of power-point slides, which include videos,

animations, pictures, graphics for better understanding theory and practical work – The faculty will

allocate chapters/ parts of chapters to groups of students so that the entire syllabus of Engineering

Graphics is covered. The power-point slides should be put up on the web-site of the College/ Institute,

along with the names of the students of the group, the name of the faculty, Department and College on

the first slide. The best three works should be sent to [email protected].

# ESE Pr (V):10 marks for Open Ended Problems, 20 marks for VIVA.

Note: Passing marks for PA (M) will be 12 out of 30.

Passing marks for ESE Pract(V) will be 15 out of 30.

Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER– I &II NEW- EXAMINATION – WINTER 2017

Subject Code: 2110013 Date:10/01/2018

Subject Name: Engineering Graphics

Time: 10:30AM TO 01:30PM Total Marks: 70 Instructions:

1. Question No. 1 is compulsory. Attempt any four out of remaining Six questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 Objective Question (MCQ) Mark

(a) 07

1. Which type of line is used to indicate a cutting plane?

2. What is the shape of section obtained, When a right regular cone is

cut by a plane perpendicular to base and passing through apex?

3. A circular plane with negligible thickness is inclined to HP &

perpendicular to VP its plan appears as_________.

4. When a line is inclined to VP and parallel to HP, the front view will

be _______ to xy. (Parallel / Perpendicular/ Inclined)

5. In which view the true shape of the base reveals, When the axis of

the solid is parallel to both HP and VP?

6. By which method the ellipse is normally drawn in isometric

projection/drawing?

7. Define “Representative Fraction”.

(b) 07

1. Which of the following represent full scale?

a) 10:1 b) 20:1 c) 1:1 d) 1:10

2. Which is the line used for visible outlines?

a) Continuous thin b) Continuous thick

c) Chain thin line d) Short zigzag thin

3. When the line is parallel to VP and perpendicular to HP, we can get

its true length in ___________.

a) Top view b) Front view c) Side view d) Front view & Side view

4. Which of the following position is not possible for a plane?

a) Parallel to both HP and VP

b) Perpendicular to HP and parallel to VP

c) Perpendicular to VP and parallel to HP

d) Perpendicular to both HP and VP

5. A tetrahedron has ____equal rectangular faces.

a) 0 b) 2 c) 3 d) 4

6. If the value of Eccentricity is not equal to 1 curve will be_________

a) Ellipse or Circle b) Parabola or Ellipse

c) Parabola or Hyperbola d) Ellipse or Hyperbola

7. The side view of an object is drawn in ___________.

a) Side plane b) Horizontal plane

c) Profile plane d) Vertical plane

Q.2 (a) Construct a plain scale of R.F. = 1:40 to show meters and

decimeters and long enough up to 10 meter. Indicate 7.4 m distance

on scale.

03

(b)

(c)

Use arc of circle method, draw an ellipse having major axis 120 mm

and minor axis 80 mm.

Draw the Epy cycloid having circle of 40 mm diameter rolls on

another circle of 150 mm diameter

04

07

Q.3 (a) Draw the projections of the following points on the same X– Y line.

(1) A point „A‟ 20 mm below H.P. and 20 mm in front of V.P.

(2) A point „B‟ 30 mm above H.P. and 40 mm in front of V.P.

(3) A point „C‟ on V.P. and 30 mm above H.P.

03

(b)

(c)

A line PQ 100 mm long is inclined at an angle of 40º to HP and 30º

to VP. One of its end point „P„ is in HP as well as VP. Determine its

apparent inclination with VP.

A line AB contains a point C on it such that the ratio of the distance

of the CB:AC is 2:1. The end A is 20 mm above H.P. and it is in 1st

quadrant. And the other end B is in V.P. The point C is 35 mm

above H.P. The line is inclined with the H.P. at an angle 30°. The

elevation length of the line AB is 70 mm. Draw the projections of

the line AB.

04

07

Q.4 (a) Explain “Solid of revolution”.

03

(b)

(c)

A semi-circular thin plate of 50 mm diameter rests on H.P. on edge

opposite to its diameter which is perpendicular to V.P. and inclined

at 60º to H.P. Draw the projections of the plate.

A regular pentagonal plate PQRST of 30 mm sides, has its corner P

on the V.P. the plate is inclined at 30° to the V.P. such that the side

RS is parallel to both the reference planes. Draw the projection of

plate.

04

07

Q.5 (a) Explain Importance of Sections of solids.

03

(b)

(c)

A cube with a 25 mm side resting on one of its corners on the VP

making equal angle to HP. Draw the projections when the base is

inclined at 45º to VP and axis parallel to HP.

A cone diameter of base 60 mm and height 70 mm is lying on the

ground with one of the generators its axis parallel to V.P. It is cut

by a vertical section plane inclined at 400

to the V.P. Draw the

sectional front view, top view and true shape of section.

04

07

Q.6 (a) Draw the symbol of 1st angle projection and 3

rd angle projection

methods.

03

(b)

Using the first angle projection method.

Draw the Front view (From direction of Arrow X) for fig.1.

Consider missing dimension of diameter as 40.

04

(c)

Draw the Top view and Left hand side view for fig.1.

Fig.1

07

Q.7 (a) Write any three main difference between first and third angle

projection.

03

(b)

(c)

Draw an isometric scale of 120 mm length and show 55 mm length

on the scale.

Fig.2 shows two views of an object. Using isometric scale, draw the

Isometric Projection indication dimensions on it. Consider total

length in F.V as 80.

Fig.2

04

07

***********


GUJARAT TECHNOLOGICAL UNIVERSITY BE- SEMESTER 1st / 2nd EXAMINATION (NEW SYLLABUS) – SUMMER - 2017



Time: 2:30 PM to 05:30 PM Total Marks: 70 Instructions:




Q.1 Objective Question (MCQ) Mark (a) 07

1. A short break line is used to indicate a

(a) Broken part (b) part to be broken (c) long part of uniform cross

section (d) short part of non-uniform cross section

2. The type of line used to indicate a cutting plane is

(a) Dashed (b) long dashed dotted (c) long dashed double dotted

(d) continuous freehand

3. The size of the drawing drawn to scale 2:1 will be ____________ the

actual size.

(a) Same as (b) twice of (c) half of (d) none of a,b, and c

4. If an area of Y2 is represented by an area of X2 on a drawing, then the

RF is equal to

(a) X/Y (b) X2/Y2 (c) √X / √Y (d) √X2 / √Y2

5. Boyle’s law, PV = constant generates a curve which is a

(a) Hyperbola (b) rectangular hyperbola (c) parabola (d) rectangular

parabola

6. The gear tooth profile is in the form of

(a) parabola (b) involute (c) spiral (d) helix

7. The line joining any point on an Archimedean spiral with the pole is

called the

(a) shortest radius (b) radius vector (c) vectorial angle (d) convolution

(b) 07

1. In the orthographic projections, F.V. is projected on

(a) H.P. (b) V.P. (c) XY (d) GL

2. The top view of a rectangular shaped room will show

(a) length and height (b) length and width (c) width and height (d)

height only

3. If ϴ + Ø = 900, then which of the following statements is CORRECT?

(a) α = β = 900 (b) side view = TL (c) FV is perpendicular to XY

(d) All of the above

4. To obtain the true shape of the section of a solid, the auxiliary plane is

set

(a) inclined at 450 to cutting plane (b) perpendicular to the cutting

plane

(c) parallel to cutting plane (d) parallel to XY

5. Compare to actual diameter, the isometric diameter of the sphere is

(a) equal (b) smaller (c) greater (d) none

6. The height of the tetrahedron of 40 mm sides will be _________ 40

mm.

(a) equal to (b) less than (c) greater than (d) half of

7. In Isometric projection, the length or width of the object is drawn at

_________ to the horizontal reference line.

(a) 300 (b) 450 (c) 900 (d) 1200

Q.2 (a) Define the following curves.

(1) Involute

(2) Hyperbola

03

(b)

(c)

Construct an Ellipse by rectangle method, given the major and minor

axes as 65 mm and 40 mm respectively.

A line AB, 60 mm long, is inclined to H.P. at 350 and also inclined to

V.P. at 450. The end A of the line is 20 mm above H.P. and 15 mm in

front of V.P. The end B is in third quadrant. Draw the projections of

line AB.

04

07

Q.3 (a) Define the following curves.

(1) Archimedean Spiral

(2) Ellipse

03

(b)

(c)

Construct a parabola with distance between focus and directrix is 40

mm.

A pentagonal prism of 30 mm sides and 60 mm height is resting on one

of its corners of its base on H.P. such that the axis is inclined at 450 to

H.P. Draw the projection of the prism. Now, the prism is cut by a

sectional plane inclined at 600 to V.P. and bisecting the axis. Draw the

sectional front view of the prism.

04

07

Q.4 (a) Differentiate between Epitrochoid and Hypotrochoid. 03

(b)

(c)

Construct an Involute of a regular pentagon of 25 mm sides.

The end projectors of a line PQ are 35 mm apart. The end P of the line

is 10 mm above H.P. and 15 mm in front of V.P. The front view and

top view of the line measure 50 mm and 60 mm respectively. Draw the

projection of the line assuming end Q is in first quadrant. Also find the

true length and true inclinations of the line with H.P. and V.P.

04

07

Q.5 (a) Give complete classification of solids. 03

(b)

(c)

The frustum of a cone of 30 mm base diameter, 50 mm top diameter

and 50 mm height is resting on V.P. on a point of its base

circumference such that the axis is inclined at 500 to V.P. and parallel

to H.P. Draw the projections of the solid.

A regular hexagonal plate of 30 mm sides is resting on one of its edges

on V.P. such that the surface is inclined at 450 to V.P. and the edge on

which it is resting is inclined at 300 to H.P. Draw the projections of the

hexagonal surface.

04

07

Q.6 (a) Draw F.V. and T.V. of the following points on a common XY line.

(1) Point P is 20 mm behind H.P. and 15 mm below H.P.

(2) Point Q is 10 mm below H.P. and 20 mm in front of V.P.

(3) Point R is 20 mm behind V.P. and 10 mm above H.P.

03

(b)

(c)

Isometric view of an object is given in Figure 1.

Draw the left hand view of the object. (Use first angle projection)

Draw the sectional front view along with A-A using first angle

projection.

04

07

Q.7 (a) Construct a plain scale to show metres when 1 centimetre represents 5

metres and long enough to measure up to 50 metres. Mark a distance of

32 metres on the scale.

03

(b)

Figure 2 shows the F.V. and LHSV of an object. Draw the Isometic

view.

10

Figure 1.

Figure 2.

***********


GUJARAT TECHNOLOGICAL UNIVERSITY BE SEMESTER 1st / 2nd (NEW) EXAMINATION WINTER 2016

Subject Code: 2110013 Date: 01/02/2017


Time: 10:30 AM TO 1:30 PM Total Marks: 70 Instructions:




Q.1 Objective Question

(a) Select the correct options for the following 07

1. A French curve is used to draw

a) Circles , b) orthographic projections, c) Right circular cone , d) Smooth

freeform curve

2. When the drawing are drawn smaller than the actual size of object then scale is

known as

a) Enlarged Scale ,b) Reduced Scale, c) Full Scale, d) Standard scale

3. A curved traced out by a point which moves uniformly both about the Centre

and at the same time away or towards the Centre is known as

a) Involute, b) Cycloid, c) Arche median spiral, d) Ellipse

4. If the object lies in the fourth quadrant, its position with respect to reference plane will be a)In front of V.P. and above H.P. , b) Behind V.P. and below H.P. c) In front of V.P. and below H.P., d) Behind V.P. and above H.P.

5. 10 mm Length of line in Isometric projection will be equal to

a) 10 mm , b) 8.15 mm , c) 12.26 mm , d) 7.07 mm

6. When a right regular cone is cut by a plane parallel to base the shape of section obtained is. a) Ellipse , b) Parabola, c) Triangle , d) Circle

7. A line having length of L is resting on HP on one end and other end is in VP

and parallel to profile plan then summation of angle made by line with HP and

VP is

a) 60ᵒ b) 90 ᵒ c) 30ᵒ d) 45ᵒ

(b) Answer the following 07

1. A circular plane with negligible thickness is inclined to HP & perpendicular to VP its plan appears as

2. Why second and fourth angle method of projection is not used in orthographic

projections?

3. What is representative factor ?

4. A sphere having radius R mm is lying on the table top at height H mm then

sphere Centre is marked at ____ mm above the table top Centre in isometric

projection.

5. The curve traced by a point keeping its distance fixed from a fixed point in a

plane is --------

6. What is the difference between the Isometric drawing and Isometric projection ?

7. A pentagonal pyramid is resting on HP on one of its edge of the base and

inclined to HP by 30º and cut by the plane parallel to HP and bisecting the axis

then its true shape can be obtain in -------- view.

Q.2 (a) Construct the plain scale of R.F. 1:50 to show metres and decimeters and long

enough to measure the length of 4 metres and 9 decimeters. Mark on the scale

following distances 1) 2.5 metres 2) 4 metres and 2 decimeters.

03

(b)

A line PQ 60 mm long its end P on VP and end Q on HP.Line is inclined to HP

by 60º and VP by 30 º and it is 20 mm away from the profile plane. Draw the

projections of the line.

04

(c)

Draw the inferior epitrochoid generated by the moving point P which is 25 mm

from the Centre of the rolling circle. Take the rolling circle radius as 30 mm and

the directing circle radius as 90 mm. The rolling circle rolls for one rotation

without slippage. Draw tangent and normal to the curve at any point on the

curve.

07

Q.3 (a) Explain the reason why for first angle method of orthographic projection the

sequence is observer – object- plane and third angle is observer –-plane- object. 03

(b) Construct the parabola if the base is 80 mm and the axis length is 50 mm. 04

(c) A circular plane having the diameter 75 mm is resting with point A of its

periphery on HP. The surface of the plane is inclined to HP such that the plan of

the plane becomes an ellipse with minor axis 30 mm. Draw the projection of the

plane when the plan of the diameter through point A is inclined at 30º to VP and

the Centre of the plane is 50 mm from VP. Find the inclination of the plane with

HP.

07

Q.4 (a) A cylinder of base diameter 50 mm and axis 70 mm rest in the VP , has its

inclination to 30º to the VP and front view of the axis is inclined at 30º to the

ground line XY .Draw the projection of the cylinder.

07

(B) A cube of 50 mm long edges has its vertical faces equally inclined to VP. It is

cut by a section plane perpendicular to VP so that the true shape of the section is

a regular hexagon. Determine the inclination of the cutting plane with the HP

and draw the sectional top view and true shape of the section.

07

Q.5 (a) A line CD has its end C is 15 mm above HP and 10 mm in front of VP. The end

D is 60 mm above HP. The distance between the end projectors is 50 mm. The

line is inclined to HP by 25 º. Draw the projections and find its inclination with

VP and true length of line CD.

07

(b)

Construct the involute of a hexagon of side 20 mm. Draw the tangent and normal

to the involute at any point. 07

Q.6 (a) Refer the figure no.1.Draw the isometric view for the same. 07

(b)

1) Give difference between the first and third angle method of orthographic

projections.

2) Draw the figure to explain the aligned and unidirectional system of

dimensioning.

04

03

Q.7 (a) Draw the orthographic projections 1) Plan ,2) Elevation and 3) any side view

according to first angle method of projection. 07

(b)

1) Construct the isometric scale to measure 100 mm.

2) Explain the importance of the dotted line and Centre line. 04

03

Figure no1

Figure No 2

***********

Seat No.: ________ Enrollment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER– 1st / 2nd EXAMINATION (NEW SYLLABUS) – SUMMER 2016



Time: 02:30 PM to 5:30 PM Total Marks: 70 Instructions:




Q.1 Objective Question (MCQ) Mark (a) 07

1. When a surface of an object is inclined to a plane of projection, it

will appear _________________ in the view.

a. foreshortened

b. in true size and shape

c. as a line

d. as a point

2. A sphere can be described in how many views? a. 4

b. 3

c. 2

d. 1

3. If point C is below HP and behind VP then in which quadrant point

C lies?

a.First b. Second c. Third d. Fourth

4. A cone base diameter 40 mm and axis 60 mm is cut by a plane

parallel to the base then the true shape will be

a.Parabola b. Circle

c. Isosceles Triangle d. Regular Triangle

5 The angle between each axis for an isometric drawing is ____.

a. 90 degrees

b. 120 degrees

c. 180 degrees

d. 60 degrees

6. Representative fraction is ratio of a. Maximum length/Minimum length

b. Actual length of object/Length of object in drawing

c. Length of object in drawing/Actual length of object

d. All of these

7. Scale used when the lengths are required in three consecutive units

is

a. Plain

b. Vertical

c. Diagonal

d. Vernier

(b) 07

1. In first angle projection system, plan is drawn

a) Above Elevation b) Below Elevation c) Left of the Elevation

d) Right of the Elevation

2. Dashed line is used to draw…

a) Outer Edges b) Projections

c) Center & Center axis d) Hidden faces

3. A solid is said to be a right solid if- a. Axis is perpendicular to its base

b. Parallel to its base

c. Inclined to its base

d. All of these

4. If the value of Eccentricity is greater than 1 curve will be

a) Ellipse b) Parabola c) Hyperbola d) Circle

5. The curve traced out by a point which moves uniformly both about

the centre and at the same time away or toward the centre is

a) Cycloid b) Logarithmic Spiral c) Involute d) Archemedian Spiral

6. When a line is inclined to VP and parallel to HP, the front view will

be _______ to xy.

(a) parallel (b) perpendicular (c) inclined at angle φ (d) non on these

7. Second angle projection is not used because

(a) Plan is above xy (b) both views overlap each other

(c) elevation is above xy (d) views are small in size

Q.2 (a) Define Representation Factor. What is Difference between plain

Scale and Diagonal Scale.

03

(b)

(c)

Construct a plain scale of R.F.= 1:50 to show meters and decimeters

and long enough up to 8 meter. Indicate 6.7 m distance on scale.

A wheel rolls over the horizontal straight line path and covers 1980

mm distance in one rotation. Draw the path traced by the point P

which is initially at the point of contact between the wheel and the

horizontal straight line.

04

07

Q.3 (a) Explain (i) Polyhedra (ii) Solid of revolution 03

(b)

(c)

A Square plate, side 40 mm, is resting on H.P with one side of plate

inclined to V.P. by 30°. Draw the projections.

Draw an ellipse if the distance of focus from the directrix is 50mm and

04

and the eccentricity is 2/ 3. 07

Q.4 (a) Draw the Projections of the following points on same Reference

line keeping 30 mm distance between its projectors.

(a)Point A is 20 mm above HP and 40 mm behind VP.

(b)Point B is 10 mm above HP and 20 mm in front of VP.

(c)Point C is in the HP and 20 mm in front of VP.

03

(b)

(c)

A pentagon plate, side 40mm is resting on H.P. on one of its corners

The plate is inclined to H.P. by 450 and perpendicular to VP. Draw

its projections.

A hexagonal plate is resting on one of its side on H.P. The side on

which it rests makes an angle of 450 with V.P. and the plate makes

an angle of 450 with H.P. Draw the projections of the plate.

04

07

Q.5 (a) A line PQ 70 mm long is parallel to VP and 300 inclined to HP. The

end P is 30 mm above HP and 20 mm in front of VP. Draw the

Projections .

03

(b)

(c)

A Pentagonal pyramid, side of the base 35 mm and height 70 mm is

resting on HP on its side, has one of its triangular faces

perpendicular to the HP and VP both. Draw its projections.

A line AB is 75 mm long. It is inclined at an angle of 45o to the

Horizontal Plane and 30o to the Vertical Plane. The end A is in the

HP as well as in the VP. Draw the projections of the line .

04

07

Q.6 (a) Explain Systems of Dimensioning in brief. 03

(b)

(c)

A square pyramid, base 45 mm side and axis 70 mm long has its

base in H.P. all edges of the base are equally inclined to V.P. It is

cut by a section plane Perpendicular to V.P. and inclined at 45

degree to the H.P. such that it bisects the axis. Draw its sectional

top view and Front View.

Draw the Sectional Front View from the direction shown with

arrow and Top View using the FIRST angle projection method for

the object shown in Figure.

04

07

Q.7 (a) Which are the Difference between 1st angle projection Method and

3rd angle Projection Method.

03

(b)

(c)

Draw Isometric View of Square Prism with side of base 40 mm and

length of axis 70 mm.

Draw Isometric View of the Following Object.

04

07

***********

1


GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–1st / 2nd EXAMINATION (New Syllabus) – WINTER 2015



Time: 10:30am to 01:30pm Total Marks: 70 Instructions:




Q.1(a) Chose appropriate answer from the given options for the following:

7

1 When a cone is cut by a plane perpendicular to base passing through the apex “the shape

of section obtained is.

(a) ellipse (b) parabola (c) hyperbola (d) triangle

2 In the third angle projection method, the view seen from left is placed on

(a) Left of the Front View (b) Right of Front View

(c) Right of Top View (d) Below Front View

3 A French curve is used to draw

(a) Circles (b) Ellipses (c) Smooth curves (d) Polygon

4 When the diameter of the directing circle is twice the diameter of rolling circle the hypo

cycloid obtained is a

(a) Circle (b)Straight line (c) Parabola (d)Hyperbola

5 To obtain the true shape of the section of solid, an auxiliary plane is set

(a) Inclined at an angle of 45o to a cutting plane (b) parallel to XY

(c) Parallel to a cutting plane (d) perpendicular to a cutting plane

2

6 A square plate of negligible thickness is inclined to HP and parallel to V.P. The front

view will appear as

(a)rhombus (b) square (c) line (d) rectangle

7 Length of a line ‘L’ in isometric drawing or view will be

(a)0.707 L (b) 0.815 L (c) 0.866 L (d) equal to length L

(b) Choose appropriate answer from the given options for the following:

7

1 The angle between isometric axis is

(a) 30º (b) 90º (c) 120º (d) 180º

2 Which one of the following is not a reduction scale ?

(a) 1:1 (b) 1:200 (c) 5/320 (d) 5:6

3 When a line is inclined to VP and parallel to HP, the front view will be _______ to xy.

(a) parallel (b) perpendicular (c) inclined at angle φ (d) none of the above

4 While drawing the isometric view of the sphere, its diameter is taken as

(a) Equal to actual diameter (b) 11/9 times of the actual diameter

(c) 21/9 times of the actual diameter (d) none of the above

5

The isometric view of a vertical line is represented at an angle of ____ in front view and

having a length _________ the original length of line.

(a) 300, Same as (b) 300, Less than

(c) 900, Same as (d) 900, Less than

6 When the cone, resting on base on V.P., is cut by section plane parallel to V.P. then the

true shape is __________ and can be seen in __________ view.

(a) Circle, Front (b) Ellipse, Front

(c) Ellipse, Top (d) Circle, Top

7 For the third angle projection method, Which of the following is correct?

(a) Observer - Object – Plane (b) Observer – Plane – Object

(c) (a) and (b) both (d) None of above

3

Q2(a) Draw an ellipse having major axis 120 mm and minor axis 80 mm by using half ellipse

by rectangle method and other half by concentric circle method.

7

(b) The front view of a line AB, 90mm long, measures 65mm. Front view is inclined to XY

line by 45°. Point A is 20mm below H.P. and on V.P. Point B is in third quadrant. Draw

the projections and find inclinations of line with H.P. and V.P

7

Q3(a) A string is kept tight while unwinding it from a pentagonal prism which is resting with

its base on HP. If 125mm long string can be unwound in one turn, name the path traced

by the end point of the string.

7

(b) A square prism, base 45 mm side and axis70 mm long has its base in H.P. and all edges

of the base are equally inclined to V.P. It is cut by a section plane perpendicular to V.P.

and inclined at45 degree to the H.P. such that it bisects the axis. Draw its sectional top

view, sectional side view and the true shape of the section.

7

Q4(a) The distance between end projectors of the straight line KL is 48 mm. The end K is 20

mm below H.P and 25 mm behind V.P. The end L is 12 mm above H.P. and 40 mm in

front of V.P. Draw the projections and finds the true length of the line.

7

(b) A circle of 50 mm diameter rolls along a straight line without slipping. Draw the curve

traced out by point P on the periphery of the circle. Take the initial position of the point

at the bottom on the vertical center line of the circle. Name the curve and also draw the

normal and the tangent to the curve at suitable point on curve.

7

Q5(a) A regular pentagonal plate is resting in V.P. on one of its sides with surface making an

angle 45o with V.P. The side on which it rests on V.P. makes 60o with H.P. Draw the

projections of pentagonal plate having the side 30mm.

7

(b) A cone diameter of base 60 mm and height90 mm is resting on H.P. on the point of

periphery of the base. Axis of the cone makes60 degree with the H.P. and 30 degree with

the V. P. Draw the projections of the cone, when the apex is nearer to observer.

7

Q6(a) Write down the difference between first angle and third angle projection methods. 4

(b) Using the first angle projection method, draw the following view for the figure:-1. Give

the dimensions using the Aligned dimensioning method.

(i) Full Sectional front view

(ii) Top view

(iii) Left Hand Side View.

10

4

Q7(a) Construct a diagonal scale of representative fraction = (1/36) showing yard, foot and

inch. Scale should be long enough to measure 5 yard.. Measure 3 yard, 2 foot, and 9

inch.

4

(b) The orthographic views of an object using the third angle projection method are shown in

the FIGURE-2. Draw the isometric projection.

10

5

FIGURE-2 Q 7 (b)

FIG :1 Q 6 ( b)


GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER– 1st / 2nd EXAMINATION (NEW SYLLABUS) – SUMMER 2015

Subject Code: 2110013 Date: 06/06/2015

Subject Name: Engineering graphics

Time: 10.30am-01.30pm Total Marks: 70

Instructions:

1. Question No. 1 is compulsory. Attempt any four out of remaining Six questions. 2. Make suitable assumptions wherever necessary.


Q.1 Objective Question

(a) Attempt all questions 7

1 When the plane cuts the cone parallel to one of the generator, the curve trace out by

section is

(a) Ellipse (b) Parabola (c) Hyperbola (d) Involute

2. In first angle projection method The Left hand side view is placed on

(a) Above elevation (C) below elevation

(b) Right side of elevation (d) Left side of elevation

3. A French curve is used to draw

(a) Circles (b) Smooth freeform curve

(c) Right circular cone (d) orthographic projection

4. If line is inclined to vertical plane and parallel to Horizontal plane, then which one of

the following is always correct?

(a) True length = Plan length (b) True length = Elevation length

(c) True length ≠ Plan length (d) None of the above

5. To obtain the true shape of the section of solid, an auxiliary plane is set at

(a) Parallel to cutting plane (b) Perpendicular to cutting plane

(c ) Parallel to Ground plane (d) Perpendicular to XY Plane

6. A square plane is inclined to HP & perpendicular to VP its elevation appears as

(a) Rhombus (b) Square (c) Straight line (d) Rectangle

7. Length (L) of line in Isometric view will be equal to

(a) 0.707 L (b) 0.815 L (c) True length L (d) 0.866 L

(b) Attempt all questions 7

1. For scale, which one is not correct

(a) 1:2 (b) 1:20 (c) 1:1/2 (d) 1/2

2. In Isometric view length, Width, and Height are inclined at

(a) 300 (b) 600 (c) 900 (d) 1200

3. When a point is below HP & in Front of VP it is in

(a) First quadrant (b) Second quadrant

(b) (c) Third quadrant (d) Fourth quadrant

4. In orthographic view the lines Perpendicular to arrow X are drawn as

(1) (1) Parallel to XY in Plan (2) Parallel to XY in elevation (3) Perpendicular to XY in

Elevation

(a) 1 (b) 2 (c) 3 (d) 1&2

5.

When the cone, resting on base on V.P., is cut by section plane parallel to V.P. then

the true shape is __________ and can be seen in __________ view.

(a) Circle, Front (b) Ellipse, Front

(c) Ellipse, Top (d) Circle, Top

6. The isometric view of a vertical line is represented at an angle of ____ in front view

and having a length _________ the original length of line.

(a) 300, Same as (b) 300, Less than

(c) 900, Same as (d) 900, Less than

7. While drawing the isometric view of the sphere, its diameter is taken as

(a) Equal to actual diameter (b) 11/9 times of the actual diameter

(c) 21/9 times of the actual diameter (d) none of the above

Q.2 (a) Construct the ellipse if the distance between the focus and the directrix is 50 mm. &

The eccentricity is 2/3. Draw the tangent and the normal to the ellipse at given point. 7

(b)

The projectors of the ends of a line AB are 50mm apart. The end A is 20mm above

the H.P. and 30mm in front of the V.P. The end B is 10mm below the H.P. and 40mm

behind the V.P. Determine the true length of line AB, its inclinations with H.P. and

V.P. and apparent angles also

7

Q.3 (a) Construct the Involute of circle of 30 mm diameter for one turn. Draw tangent and

normal to the Involute at any point on it..

7

(b)

A line AB, 100 mm long, is inclined at 450 to HP. The end A is 10 mm above the HP

and is 65 mm in front of the VP Draw projections of the line if its Front View measures

90 mm and find the inclination of the line with the VP.

7

Q.4 (a) A hexagonal pyramid, side of the base 25 mm long and height 70 mm resting on HP

on its side, has one of its triangular faces perpendicular to the HP and inclined at 60º

to VP. Draw its projections.

7

(b)

Draw an Archimedean spiral of 1.5 convolutions, the greatest and least radii being 115

mm and 25 mm respectively. Draw tangent and normal to the spiral at any point on

the curve.

7

Q.5 (a) A hexagonal Prism, side of base 30 mm and height 60 mm, is standing upright with

base on H.P. one side of the base and axis are parallel to V.P. It is cut by section plane

making an angle of 600 to H.P. and crossing the axis 10 mm from the top. Draw top

view, sectional front view, sectional left hand side view and true shape of section.

7

(b)

A rhombus of negligible thickness is having its diagonals 100 mm and 50 mm long.

Draw the projections of the rhombus when the longer diagonal is inclined at 300 to the

Horizontal Plane and 300 to Vertical Plane.

7

Q.6 (a) 1, In orthographic projection why second and fourth angle projection method are

not used?

2. Draw the symbol of First angle projection method.

3. Give the dimension of Title block and list the information given in it.

2

2

3

(b)

Using the Third angle projection method, draw the following view for the FIGURE-1.

Give the dimensions using the Aligned dimensioning method.

(i) front view (ii) Top view

(iii) Full Sectional Right Hand Side End View.

7

Q.7 (a) Construct a diagonal scale of representative fraction = (1/36) showing yard, foot and

inch. Scale should be long enough to measure 5 yard.

7

(b)

The orthographic views of an object using the first angle projection method are shown

in the FIGURE-2. Draw the isometric projection

7

FIGURE-1

FIGURE-2

***********

x

x


GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER– 1st / 2nd EXAMINATION (New Syllabus) – WINTER 2014

Subject Code: 2110013 Date: 31-12-2014 Subject Name: Engineering Graphics Time: 10:30 am - 01:30 pm Total Marks: 70 Instructions:

1. Question No. 1 is compulsory. Attempt any four out of remaining Six questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. 4. Don’t rub construction/ projection lines after completion of drawing. 5. All dimensions are in mm. 6. Figure in the question paper is not to the scale. 7. Take suitable scale whenever required and mention in clearly.

Q.1 (a) Select the correct options for the following:- 07

1. Name the solid formed by revolving right angle triangle with one of its

perpendicular side fixed. (a) Cone (c) Cylinder (b) Tetrahedron (d) Octahedron

2. To draw the leader line, which type of the following line is used? (a) Continuous thick line (c) Long chain thin line (b) Continuous thin wavy line (d) Continuous thin line

3. If the object lies in the second quadrant, its position with respect to reference plane will be

(a) In front of V.P. and above H.P. (c) In front of V.P. and below H.P. (b) Behind V.P. and below H.P. (d) Behind V.P. and above H.P.

4. When the drawing are drawn smaller than the actual size of object then scale is known as

(a) Reduced Scale (c) Enlarged Scale (b) Full Scale (d) None of Above

5. A curved traced out by a point which moves uniformly both about the centre and at the same time away or towards the centre is known as

(a) Involute (c) Archemedian spiral (b) Cycloid (d) None of above

6. The isometric view of a vertical line is represented at an angle of ____ in front view and having a length _________ the original length of line.

(a) 30o, Same as (c) 30o, Less than (b) 90o, Same as (d) 90o, Less than

7. In a third angle projection method, right hand side view of an object is drawn ___________ front view.

(a) Left side of (c) Right side of (b) Rear side of (d) None of above

(b) Select the correct options for following:-

07

1. If the 10 m length is represented as 1 mm on the map then representative fraction is

(a) 1/100 (c) 1/1000 (b) 1/10 (d) None of above

2. Fourth angle projection is not used because (a) Front view is above reference line and top view is below reference line (b) Top view is above reference line and front view is below reference line (c) Front view and top view both overlap on each other and below

reference line (d) Front view and top view both overlap on each other and above the

reference line 3. When the cone, resting on base on V.P., is cut by section plane parallel to V.P.

then the true shape is __________ and can be seen in __________ view.

(a) Circle, Front (c) Ellipse, Front (b) Ellipse, Top (d) Circle, Top

4. The eccentricity of which of the following curve is greater than one? (a) Ellipse (c) Parabola (b) Hyperbola (d) None of above

5. The isometric projection of 90 mm line is ___________ mm.

(a) 30*(6)(1/2) (c) 30*(3)(1/2) (b) 30*(2)(1/2) (d) None of above

6. For the third angle projection method, Which of the following is correct? (a) Observer - Object – Plane (c) (a) and (b) both (b) Observer – Plane – Object (d) None of above

7. When the front view of line having a length less than the original length then which of the following is correct?

(a) Line is inclined to H.P. (c) Line is inclined to both H.P. and V.P. (b) Line is inclined to V.P. (d) (b) and (c) both

Q.2 (a) The foci of an ellipse are 110 mm apart. The minor axis is 70 mm long.

Determine the length of major axis and draw half ellipse by rectangle method and other half by concentric circle method.

07

(b)

A line PQ, 65 mm long, is inclined to H.P. by 30o and inclined to V.P. by 45o. The end P is 20 mm below H.P. and 25 mm behind V.P. Point Q is in fourth quadrant. Draw its projections and find the position of the point Q.

07

Q.3 (a) The front view and top view of a line MN is inclined at an angle of 30o and 40o

respectively. The front view of line MN measures 50 mm. Point M is 15 mm above H.P. and 10 mm in front of V.P. Draw the projections of line MN and find the true length of line MN.

07

(b)

A square plate of side 40 mm is rest on one of its corner on H.P. with diagonal horizontal and inclined at 50o to V.P. The Plate is seen as a rhombus in plan with one of its diagonals measuring 30 mm. Draw the projections.

07

Q.4 (a) A regular pentagonal plate is resting in V.P. on one of its sides with surface

making an angle 45o with V.P. The side on which it rests on V.P. makes 60o

with H.P. Draw the projections of pentagonal plate having the side 30mm.

07

(b)

A frustum of hexagonal pyramid, side of base 30 mm and height 60 mm, is cutting from a pyramid of height 80 mm, is standing upright with base on H.P. and axis parallel to V.P. It is cut by section plane making an angle of 50o to V.P. and remaining 20 mm away from the axis. Draw top view, sectional front

view, sectional left hand side view and true shape of section. 07

Q.5 (a) Draw the projection of a cone, base 44 mm diameter and axis 50 mm long, when it is resting on the H.P. on a point of its base circle with the axis making an angle of 45o with H.P. and 30o with V.P.

07

(b)

A circle of 50 mm diameter rolls along a straight line without slipping. Trace the path of a point on the circumference of the rolling circle for one complete revolution. Name the curve.

07

Q.6 (a) On a map of a state, 1 cm represents 5 kms. Construct a plain scale long enough to measure a distance between two city 100 kms far from each other.

03

(b)

Using the first angle projection method, draw the following view for the figure:-1. Give the dimensions using the Aligned dimensioning method.

(i) Sectional front view by taking section along C-D (ii) Sectional left hand side view by taking section along A-B (iii) Top view

Figure :- 1

04 04 03

Q.7 (a) Construct a diagonal scale of representative frraction = (1/36) showing yard, foot and inch. Scale should be long enough to measure 5 yard.

04

(b)

Draw the isometric view for the figure:-2

10

Figure :-2

***********

1/3

Seat No.: ________ Enrolment No._______

GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER– 1

st / 2

nd • EXAMINATION – SUMMER • 2014

Subject Code: 2110013 Date: 17-06-2014


Time: 02:30 pm - 05:30 pm Total Marks: 70 Instructions:




4. Retain construction lines

Q.1 (a) Choose the correct alternative : 07

1. When the plane cuts the cone parallel to the generator, the curve traced out is

(a) ellipse (b) parabola (c) hyperbola (d) triangle

2. When a line is inclined to VP and parallel to HP, the front view will be _______ to

xy.

(a) parallel (b) perpendicular (c) inclined at angle φ (d) non on these

3. A square plate of negligible thickness is inclined to HP. The front view will appear

as

(a) rhombus (b) square (c) line (d) rectangle

4. Name the solid formed by four equilateral triangle

(a) Square pyramid (b) Triangular pyramid

(c) Tetrahedron (d) Square prism

5. A cylinder standing on the HP is cut by a vertical plane parallel to the axis and

away from it. The shape of the section will be

(a) Rectangle (b) Circle (c) Ellipse (d) Hyperbola

6. Two lines inclined at 90º in the orthographic view appear in isometric view to be

inclined at

(a) 60º (b) 90º (c) 120º (d) 180º

7. When the axis of the solid is parallel to both HP and VP the view which reveals the

true shape of the base is

(a) Front view (b) Top view (c) Side view (d) None of these

(b) Choose the correct alternative : 07

1. Length of a line ‘L’ in isometric drawing or view will be

(a) 0.707 L (b) 0.815 L (c) 0.866 L (d) equal to length L

2. If D is the diameter of sphere, its value in isometric projection will be equal to

(a) D (b) D (c) D (d) none of these

3. For drawing of small instruments, watches etc. the scale used is

(a) Reduced scale (b) Full scale (c) Enlarged scale (d) none of these

4. Second angle projection is not used because

(a) Plan is above xy (b) both views overlap each other

(c) elevation is above xy (d) views are small in size

5. If the object lies in third quadrant, its position with respect to reference planes will

be

(a) In front of VP, above HP (b) Behind VP, above HP

(c) Behind VP, below HP (d) In front of VP, below HP

2/3

6. In the game of cricket, a ball is thrown from the boundary and reaches the gloves of

the wicket keeper, the curve traced out will be

(a) Hyperbola (b) Involute (c) Parabola (d) Cycloid

7. In isometric projection/drawing the ellipse is normally drawn by which method

(a) Arc of circle method (b) Concentric circle method

(c) Four centre method (d) Oblong method

Q.2 (a) Draw an Archemedian spiral of 1.5 convolutions, the greatest and least radii being

125 mm and 35 mm respectively. Draw tangent and normal to the spiral at any

point on the curve.

07

(b) Construct a plain scale with RF = 1/5 to show decimeters (dm) and centimeters. The

scale should be long enough to measure 1 m. Show the length of 7.4 dm on it.

07

Q.3 (a) A thin 30º-60º set square has its longest edge is 80 mm in the VP and inclined at 45º

to the HP. Its surface makes an angle of 60º with the VP. Draw its projections.

07

(b) A cube of 50 mm long edges has its vertical faces equally inclined to VP. It is cut

by a section plane perpendicular to VP so that the true shape of the section is a

regular hexagon. Determine the inclination of the cutting plane with the HP and

draw the sectional top view and true shape of the section.

07

Q.4 (a) A line AB 90 mm long is inclined at 30º to the HP. Its end A is 12 mm above the

HP and 20 mm in front of VP. Its front view measures 65 mm. Draw the top view

of AB and state its length. Determine the inclination of top view and line AB with

VP.

07

(b) A hexagonal pyramid, side of the base 25 mm long and height 70 mm resting on HP

on its side, has one of its triangular faces perpendicular to the HP and inclined at

60º to VP. Draw its projections.

07

Q.5 (a) A line AB measures 80 mm in top view and 70 mm in front view. The midpoint M

of the line is 45 mm in front of VP and 35 mm above HP. The end A is 10 mm in

front of VP. Draw the projections of the line and find its true length and inclination

with HP and VP.

07

(b) A square lamina of side 35 mm is resting on HP on one of its sides such that the

surface of the lamina is inclined at 40º to HP. Draw its top view and front view

when the side on which it rests is parallel to VP.

07

Q.6 Figure 1 shows an object. Draw sectional front view along section P-Q looking in

the direction of arrow X , top view and sectional left hand side view along section

R-S using first angle projection method.

14

3/3

Figure 1

Q.7 Figure 2 shows the front view and top view of an object. Draw the isometric view.

Figure 2

14

*************

1/2


GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER– 1st / 2nd EXAMINATION (New Syllabus) – WINTER 2013

Subject Code: 2110013 Date: 20-12-2013 Subject Name: Engineering Graphics Time: 10:30 am – 01:30 pm Total Marks: 70 Instructions:

1. Question No. 1 is compulsory. Attempt any four out of remaining six questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks.

Q.1 (a) Choose appropriate answer from the given options for the following: 07

1. In the first angle projection method, the view seen from left is placed on (a) Above Front View (b) Right of Front View (b) Above Top View (d) Below Front View

2. While drawing the isometric view of the sphere, its diameter is taken as (a) Equal to actual diameter (b) 11/9 times of the actual diameter (b) 21/9 times of the actual diameter (d) none of the above

3. A French curve is used to draw (a) Circles (b) Ellipses (c) Smooth freefrom curves (d) Polygon

4. Which one of the following is not a reduction scale ? (a) 1:1 (b) 1:200 (c) 5/320 (d) 5:6

5. If the generating point is on the generating circle and the generating circle is outside the directing circle, the curve obtained is:

(a) Inferior hypotrochoid (b) epicycloids (c) hypocycloid (d) superior trochoid

6. To obtain the true shape of the section of solid, an auxiliary plane is set (a) Inclined at an angle of 45o to a cutting plane (b) parallel to XY (b) Parallel to a cutting plane (d) perpendicular to a cutting plane

7. If a line is inclined to the Vertical Plane and parallel to Horizontal Plane, then which of the following statements is always CORRECT ?

(a) True Length = Plan Length (b) True Length ≠ Plan Length (c) True Length > Elevation Length (d) True Length = Elevation Length

(b) State true or false for the following sentences: 07 1. Dashed lines are used to show outlines of the adjacent part. 2. Measurement of the distances is simpler in a diagonal scale than a vernier scale. 3. If front view of a line is parallel to XY, its Top View gives True Length. 4. The eccentricity of parabola is less than the eccentricity of a hyperbola. 5. A horizontal section plane will create a sectional Front View. 6. If a point is in the Vertical Plane, its Front View is seen on XY. 7. A tetrahedron has four equal square faces.

Q.2 (a) Construct the parabola if the base is 105 mm and the axis length is 98 mm using rectangle method. Locate focus, vertex and directrix of the parabola.

07

(b) A wheel of diameter 60 cm, rolls on a straight horizontal road. Draw the locus of a point P on the periphery of the wheel for one revolution of the wheel, if P is initially on the road. Name the curve.

07

Q.3 (a) A line AB, 100 mm long, is inclined at 50o to Horizontal Plane. The end A is 10 mm above

the Horizontal Plane and end is 65 mm in front of the Vertical Plane. Draw projections of 07

2/2

the line if its Front View measures 90 mm and find the inclination of the line with the Vertical Plane.

(b) A line AB is 80 mm ling. It is inclined at an angle of 45o to the Horizontal Plane and 30o to the Vertical Plane. The end A is 20 mm above Horizontal Plane and in front of Vertical Plane. Draw the projections of the line and also write Elevation Length and Plan length of the line.

07

Q.4 (a) A semi-circular thin plate of 60 mm diameter, rests on the Horizontal Plane on its diameter,

which is inclined at 45o to the Vertical Plane and the surface is inclined at 30o to the Horizontal plane. Draw the projections of the plate.

07

(b) A pentagonal pyramid of 35 mm base edge and 70 mm height is resting on the Horizontal Plane with one of its triangular surfaces perpendicular to the Horizontal Plane and parallel and nearer to Vertical Plane. Draw its projections.

07

Q.5 (a) A tetrahedron of 70 mm long edges is lying on Horizontal Plane on one of its faces with an

edge of that face perpendicular to the Vertical Plane. It is cut by a section plane perpendicular to both the reference plane in such a way that the true shape of section is an isosceles triangle of 45 mm height. Draw elevation, plan and side view when smaller cut piece of the object is assumed to be removed.

07

(b) A rhombus is having its diagonals 100 mm and 50 mm long. Draw the projections of the rhombus when the longer diagonal is inclined at 30o to the Horizontal Plane and 30o to Vertical Plane.

07

Q.6 (a) In orthographic projection why second and fourth angle projection method are not used ? 02

(b) Pictorial view of an object is given in figure 1. Draw (i) Front View and (ii) Full Sectional Right Hand Side View. Insert necessary dimensions using aligned system of dimensioning. Take section along X-X.

Figure: 1 Figure: 2

12

Q.7 (a) Differentiate between Isometric View and Isometric Projections. 02

(b) Draw the isometric view from the orthographic projections shown in figure 2. 12

*************

1/2


GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER– 1st / 2nd • EXAMINATION – SUMMER 2013

Subject Code: 110013 Date: 12-06-2013 Subject Name: ENGINEERING GRAPHICS Time: 02:30 pm – 05:30 pm Total Marks: 70 Instructions:

1. Attempt any five questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. 4. Each question carry equal marks (14 marks) 5. Retain all construction lines. 6. Lines, dimensions etc. should be as per BIS-SP-46.

Q.1 (a) Differentiate in between Unidirectional system and Aligned system of

dimensioning. 03

(b) Fig. 1 shows the pictorial view of an object. Draw the following views: (i) Sectional front view from A-A, (ii) R.H.S. view and (iii) Top view using 1st angle Projection Method.

11

Q.2 (a) A circular disc of diameter AB = 80mm rotates about its centre O for one

revolution. The point P, which is initially at A moves to the centre when the disc completes the half revolution and then comes back to A in the remaining half revolution. Trace the locus of the point P, assuming the rotation of the disc and the movement of the point P to be uniform.

07

(b) Construct three convolutions of the involute of 10 mm long line. 07

Q.3 (a) The projectors of the ends of a line AB are 50 mm apart. The end A is 20 mm above horizontal plane and 30 mm in front of the vertical plane. The end B is 10 mm below the HP and 40 mm behind the V.P. Determine the true length of AB and its inclination with H.P. also find its apparent angles.

07

(b) A regular pentagonal plane having the side 30 mm is resting on H.P. on one of its corners. The surface of the plane is inclined to the H.P. at 45º. Draw the projections of the plane when the side opposite to the corner on which it rest on H.P. is inclined at 30º to V.P.

07

Q.4 (a) A pentagonal prism rests on one of its edges of the base on H.P. with its axis

inclined at 45º to the H.P. The top view of the axis is inclined at 30º to the V.P. Draw the projections of the prism, assuming the edge of the base to be 30 mm and the axis 70 mm long.

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(b) A cone diameter of base 50 mm and height 80 mm is resting on the H.P. on one of its generators with axis parallel to the V.P. It is cut by horizontal section plane passing through a point on the axis 55 mm away from the apex. Draw the elevation and sectional plan of cone.

07

Q.5 (a) The length of the Khandala Tunnel on the Mumbai-Pune express way is 330 m,

on the road map it is shown by 16.5 cm long line. Construct a plain scale to show metres and to measure up to 400 m. Show length of 290 m long on the express way.

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(b) Two points A and B are 100 mm apart. Third point C is 75 mm from A and 50 mm from B. Draw an ellipse passing through A, B and C.

07

Q. 6 (a) A right circular cone diameter of base 50 mm and axis 60 mm long, resting on its

base on H.P. A semi circular hole of radius 15 mm is cut through the cone such that, the axis of the hole is perpendicular to V.P. and intersecting the axis of the cone at 20 mm above the base. The flat surface of the hole is parallel to H.P. draw the development of lateral surface of the cone.

07

Q. 7

(b) A lineto H.PDraw

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Projec

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P. and end Q o0 mm away

ng line. the object. Dr

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is inclined ofile plane.

etric

07

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GUJARAT TECHNOLOGICAL UNIVERSITY - mytoolbag.inmytoolbag.in/media/GTUPAPERS/1/2/FIRSTYEAR/EG.pdf · circle and ellipse) with its inclination to one ... of its corners of its base