NOBLE GROUP OF INSTITUTIONS JUNAGADH FACULTY OF E ...ngivbt.edu.in/wp-content/uploads/2018/07/QUESTION-BANK_3rd-Sem.pdf · 15. Classify the forging process and explain drop forging

NOBLE GROUP OF INSTITUTIONS, JUNAGADH FACULTY OF ENGINEERING, DEPARTMENT OF MECHANICAL ENGINEERING

Questions Bank

Subject/

Subject Code

Semester/

Branch

Issue Date Due Date

HRM /

3330001

3rd

– Mech

Chapter-1

Introduction to HRM

Q-1 What are the basic needs of Human ?

Q-2 Give the definition of productivity & HRM

Q-3 State any five characteristics of Human Resources

Q-4 State the function of Human Resource Management.

Q-5 Explain the scope of H.R.M.

Q-6 Describe the impact of human factors on productivity

Q-7 Explain relation between Morale and Productivity.

Q-8 Explain Importance of providing need based training to the man power.

Q-9 State in short the Impact of human element on Industrial harmony.


Chapter-2

Human needs and Values

Q-1 What are the basic needs of Human?

Q-2 Define Job Satisfaction

Q-3 Write short note on “x” and “y” theory.

Q-4 Discuss the importance of Maslow’s needs of Hierarchy.

Q-5 Classify the human needs.

Q-6 State the factors affecting the job satisfaction.

Chapter-3

Behavioural Dynamics

Q-1 What are the main types of groups?

Q-2 Give any two desirable characteristics of a group member.

Q-3 Define Group

Q-4 State the steps of human group formation

Q-5 Describe the role of group in the organization

Q-6 Write short note on “Joheri window”.

Q-7 Explain the Techniques of resolution of conflicts.

Q-8 Explain the stages of group formation.

Q-9 What is group dynamics? State the types of groups

Q-10Explain formal and informal groups.

Q-11 Explain the Game theory for interpersonal relations.

Q -12: Explain the factor affecting on the interpersonal behavior.

Q -13: State importance of the mental health in group dynamics.

Q -14: Explain the following leadership:

(1) Autocratic leadership (2) Democratic leadership (3)Laisse-faire leadership

Q -15: What is a negative attitude? Explain dos and don’ts for developing positive

attitudes.

Q-16: Give classification of power? Briefly explain about any one.


Chapter-4

Leadership Development

Q-1 Define Leadership. State the types of leadership.

Q-2 Give any four factors affecting the decision making.

Q-3 Explain the techniques of Decision making.

Q-4 Discuss the qualities of good leader.

Q-5 Discuss the process of Decision making.

Q-6 State the list of technique of decision making and explain qualitative method.

Q-7 Explain Numerical methods of decision making.

Chapter-5

Role of Supervisor

Q-1 Name the types of trainings.

Q-2 What is the need of counseling?

Q-3 Explain the term Apprenticeship

Q-4 Define trade union

Q-5 What is difference between Refresher training and promotion training.

Q-6 State the need and importance of motivation.

Q-7 State the objectives of trade union

Q-8 How can we motivate the people?

Q-9 State the advantages of team spirit


Chapter-6

Change & Stress Management

Q – 1: Write the need of change. Explain the strategies to manage change.

Q – 2: Define the trade union and explain the objectives.

Q – 3: State the causes of conflict between labors and management.

Q – 4: Write short note on a barriers to the change management.

Q – 5: Define stress. Explain various method of measuring the stress.

Q – 6: Explain the different stress measuring technique.

Q – 7: Explain the stress management.

Q – 8: Explain the attributes of stress.

Q-9 What is concept of stress management?

Q-10 Explain characteristics of stress.

Q-11 Explain the symptoms of Stress

Q-12 State the different personal techniques to relieve Stress.

Q-13 State the important of physical exercise in stress management.

S

Lect. Himalay Raval Subject In-Charge, Mechanical Engineering Dept. NGI

Prof Prakash Parmar Head of Department, Mechanical Engineering Dept., NGI

NOBLE GROUP OF INSTITUTIONS, JUNAGADH DIPLOMA ENGINEERING, DEPARTMENT OF MECHANICAL ENGINEERING

Manufacturing Engineering – I

Question Bank for Mid Test Chapter - 1

1. Define Manufacturing process. Explain any five mechanical properties of metal. 2. Define the following terms. (Define all Mechanical Properties.)

1. Hardness 2. Ductility 3. Malleability 4. Machinability 5. Toughness 6. Brittleness 7. Rigidity

3. Define recrystalisation temperature. State at least six factors affecting recrystalisation

temperature of metals.

4. Define the residual stress and give its effect on manufacturing processes. 5. Define „Manufacturing Process‟. Explain importance and scope of manufacturing process.

6. What is manufacturing process? Explain any five mechanical properties of metal.

Chapter - 2 1. Define hot working and cold working process and state difference between them.

2. Explain hot rolling and cold rolling process with neat sketch.

3. Define following terms. 1. Ingot 2. Bloom 3. Billet 4. Strip 5. Slab 6. Plate 7. Sheet

4. Explain “Two High Rolling Mill” with neat sketch.

5. List the various types of rolling mills and explain four high rolling mills with sketch.

6. Explain wire drawing process with a neat sketch.

7. Explain blank drawing process with a neat sketch.

8. Explain Cold or Impact Extrusion process with neat sketch. 9. Define extrusion. State the advantages and limitations of extrusion process.

10. List the metal forming processes and explain any one of them.

11. Explain Blanking, Piercing and Embossing operation with sketch.

12. Describe spinning process with a neat sketch.

13. Classify the Mechanical Press & List the operations which are performed on Press.

14. And which are the considerable points for selection of Press?

15. Classify the forging process and explain drop forging with a neat sketch

16. State the applications, advantages & disadvantages of forging process.

17. Write a short note on punching operation with neat & clean sketch.

18. Explain process for manufacturing of connecting road by drop forging process.

19. List the application and advantages of forging process.

20. Explain various forging defects.


Chapter - 3

1. Define Pattern. List different types of patterns. Explain any one with sketch.

2. List different types of pattern material. Explain any one.

3. Explain sweep pattern with sketch.

4. Define pattern allowance. Name the various pattern allowances giving purpose of each.

5. State the different types of cores and explain any two types of cores with neat sketch.

6. Define „core‟ and „core print‟. Explain Core making process in brief.

7. List types of moulding sand. Explain any two.

8. State the type of furnaces used in foundries. Describe briefly the working of induction

furnace.

9. Explain rotary furnace with sketch.

10. Draw sketch of a cupola and label various parts with different zones on its.

11. State various equipment used to prepare mould. Describe any three of them.

12. List different types of gating system and explain any one gating system with sketch.

13. List different types of moulding process and explain any one.

14. List different types of Machine moulding process. Explain squeezer moulding machine with

sketch.

15. Write short note on “Cleaning of Casting”.

16. Write short note on “Salvage techniques for Casting”.

17. List special casting process and explain cold chamber die casting process.

18. Explain the centrifugal casting process.

19. List the step involved in „Investment casting‟. State advantage and disadvantage of it.

20. List out any seven casting defects, its causes and remedies.

21. List Inspection of casting and explain any two.

22. List metal pouring equipment and explain in short.

Chapter – 4 1. Explain blow moulding with sketch.

2. Explain Injection moulding with sketch.

Chapter - 5 1. Define welding process. 2. Define fusion or non-pressure welding process.

3. Define plastic or pressure welding process.

4. Classify welding process. OR Classify pressure welding process. OR Classify non

pressure welding process. 5. Give advantages and applications of welding 6. Explain gas welding process. OR Explain oxy-acetylene gas welding process. 7. Give name for types of gas welding flame produce in gas welding process and Explain

neutral flame, carburizing flame, oxidizing flame. 8. List the equipment used in gas welding process. 9. Explain gas welding technique. 10. Give the advantages, disadvantages and applications of gas welding process.


11. List types of arc welding process. 12. Explain arc welding process. 13. Define straight polarity and reverse polarity. 14. Difference between A. C. & D. C. supply. 15. List equipment used in arc welding. 16. List the types of electrode. 17. Explain TIG welding process.

18. Explain MIG welding process.

19. Explain submerged arc welding (SAW) process.

20. Explain spot welding process.

21. Explain seam welding process.

22. List types of resistance welding process.

23. Explain Laser beam welding (LBW) process.

24. Explain Ultrasonic welding (USW). 25. Explain Electron beam welding (EBW). 26. Explain thermit welding process. 27. Explain soldering process. 28. Explain brazing process. 29. Write comparison between soldering, brazing & welding. 30. Explain advantages and disadvantages of adhesive bonding. 31. Write short note on Fastners. 32. Explain Welding defects. 33. Explain Inspection & Testing of Welding. 34. Safety precautions for Arc & Gas welding.

Prof. Prakash N. Parmar Subject In-Charge, Mechanical Engineering Dept. NGI - Diploma


Thermodynamics Question Bank

Chapter 1 Q-1 For the following draw simple sketch, show system boundary and state type of each boundary and type of system

(1) Battery used in electric circuit (2) Reciprocating Air compressor (3) Fan (4) Thermos flask filled with hot tea

Q-2 Define following with SI units (1) Enthalpy (2) Entropy (3) Internal energy (4) Specific heat

Q-3 Explain closed, open and isolated systems with neat sketches Q-4 Differentiate following

(1) Heat & Work (2) Process & Cycle (3) Reversibility & irreversibility (4) Shaft work & flow work (5) point function & path function (6) Diathermal wall & adiabatic wall

Q-5 Define Energy, Classify and explain Heat and Work Q-6 What is system Boundary? Explain types of boundary with examples Q-7 Draw a neat sketch of open system and closed system and explain with two examples. Q-8 Define energy. Write the similarities and differences of heat energy and work energy. Q-9 Draw sketch and write the types of given system boundary

(1) Nozzle (2) Piston cylinder (3) Reciprocating air compressor (4) Furnace

Q-10 Define Following Terms (1) Isolated System (2) Density (3) Flow work (4) Intensive property (5) Process (6) Cycle (7) Entropy

Q-11 Differentiate Following (1) Thermodynamic cycle and Mechanical cycle (2) Point function and Path function

Q-12 Define Thermodynamic system with example and enlist the thermodynamic properties Q-13 State the Zeroth law of thermodynamics and its application. Name various Temperature measurement devices used with related unit.

Chapter 2 Q-1 Write steady flow energy equation with meaning of each term and apply it to steam turbine and throttling process Q-2 State first law of thermodynamics and prove internal energy is a property Q-3 Describe Joule’s experiment and thereby explain first law of thermodynamics. Q-4 Derive the steady flow energy equation for open system & explain each terms of it. Q-5 Explain “Law of Conservation of energy” and Prove Internal Energy Is property.


Q-6 Explain “Thermodynamic Temperature Scale” Q-7 Explain Quasi-Static process with neat sketch. Q-8 Write a condition for steady flow. Derive a work equation W = - ∫ v dp for open system. Q-9 Explain first law of thermodynamics and derive general energy equation. Q-10 A gas turbine pass air flow-rate is 4.5 kg/sec. Inlet velocity of air is 200 m/sec and enthalpy 6699 KJ/kg, outlet velocity of air 150 m/s and enthalpy 5460 KJ/kg. Systemreject heat 50.4 KJ/kg in the surrounding then find the value of power generated byturbine. Q-11 Prove that the entropy is a point function. Q-12 One engineer challenge that he made one engine which generates 4.4 kW power during engine testing. An engine consumes 0.5 kg fuel per hour and the calorific value of fuel is44000 KJ/kg. During the cycle engine reach maximum temperature 1500° C and minimum temperature 400° C. Find the challenge is true or false. Q-13 In a gas turbine system air enters with velocity 150 m/s and enthalpy 7500 KJ/Kg with steady mass flow rate of 5 KJ/s. Air exits from the system atvelocity 100 m/s and enthalpy 6000 KJ/Kg. If 50 KJ/Kg heat is wastedinto the surrounding, find power developed by the gas turbine. Q-14 In a gas turbine, air enters with velocity 200 m/s and enthalpy 6699 KJ/Kg with steady mass flow rate of 4.5 Kg./sec. Air exists from the system at velocity 150 m/sand enthalpy 5460 KJ/Kg. If 50.4 KJ/Kg. heat is wasted into the surroundings, findPower developedby the gas turbine. Q-15 Classify energy and explain internal energy

Q-16 Explain how SFEE is applied to Air compressor, Turbine and Nozzle for energy transfer. Q-17 An inventor claims that his engine takes 150000J at temperature 270C and rejects 50000 J at temperature -230C and delivers 30kWh work. Is his engine is theoretically possible? Q-18 Explain the term Entropy. Discuss the practical significance of entropy.

Chapter 3 Q-1 Derive Characteristic gas equation and also derive relationship between Cp, Cv and R. Q-2 Draw P-V and T-ϕ diagram for Isothermal process and derive equation of work and heat for Isothermal process Q-3 Draw P-V and T-ϕ diagram for Isentropic process and Derive equation of work and heat for Isentropic process Q-4 1 Kg of gas is heated at constant pressure in such a way that its temperature rises from 25° C to 200° C then find out heat added,work done on gas and change in internal energy of system duringthis process . takeCp=0.987 KJ/Kg K and Cv=0.73 KJ/Kg K . Q-5 Derive characteristic gas equation using an ideal gas laws.


Q-6 One kg of gas enclosed in a closed vessel has absolute pressure 2.5 bar, temperature 30OC. If it is compressed up to 5.5 bar pressure find (1) Finaltemperature (2) change in internal energy take Cp = 1.005 kJ/kg.K& R =0.297 kJ/kg.K Q-7 Show following process on P-V and T-S plane

(1) Constant volume Process (2) Isothermal Process (3) Isentropic Process (4) Isobaric Process

Q-8 One kg air is at 12 bar absolute pressure and temperature 900OC. It is expanded up to 2.5 bar absolute pressure by isentropic process.Find (1) Final Volume (2) Final temperature (3) Work doneTake R = 0.287 kJ/kg.K , γ = 1.4 Q-9 Prove that for Polytropic process ∫dQ=Work done X (λ-n/ λ-1). Where λ=ratio of specific heat, n = polytropic index Q-10 A volume of 0.5 m3 of gas at a pressure of 10 bar and 2000C is expanded in a cylinder to 1.2 m3 at a constant ptessure. Calculate the amount of work doneand increase in internal energy. Q-11 Explain Following

(i) Throttling Process (iii) Universal gas Constant Ru (ii) Adiabatic Process (iv) Specific heat

Q-12 An ideal gas at 300C and 1 bar is compressed adiabatically from 5m3to 1 m3.Find the temperature, pressure and the work done. λ = 1.4 Q-13 Explain (1) Boyle’s law (2) Charle’s law (3) Avogadro’s law Q-14 Prove PVγ= C; (for isentropic process) Q-15 A closed system executes adiabatic process due to which a change in internal energy takes place; A work of 10KJ is done by the system onsurroundings during this process. Determine the change of specificinternal energy of system, if system contains mass of 0.2 kg. Q-16 A certain quantity of air has a volume of 0.025 m3 at a pressure of 1.2 barand 270 C. It is compressed to a volume of 0.005 m3 according to lawPV1.3=const. Find the final temperature and work done duringcompression. Q-17 Derive Expression for work done during adiabatic process. Q-18 If a gas have Temperature, Pressure & Volume are 3000C , 10bar & 15 m3respectively. Find its characteristic gas constant and specific heats if itsmass is 30 kg. Take γ =1.4 Q-19 Define Specific Heats at constant pressure and at constant volume Q-20 List various Thermodynamics Processes and show it on the P–V & T–S diagram Q-21 Specific heats at constant pressure and constant volume are 0.987 KJ/Kg K and 0.730 KJ/Kg K respectively for an ideal gas. Find value of ratio of specific heatsand GasCharacteristic constant R. If 5 Kg of this gas is heated from 500 C to 5000 Cat constant pressure then, find heat added, work done and change in Internal Energy Q-22 Explain Reversible and irreversible processes with example. Q-23 One kg of air at 3.5 bar and 1770C expands adiabatically to a pressure of 1.3 bar. Calculate the amount of external work done and change in internal energy of air during expansion. Take R= 278J/kg0K and γ = 1.4 Q-24 During Isothermal process the 1.5 kg of air compressed from 1bar and 200C temperature to a pressure of 5bar. Calculate the amount of external work done, heat transfer and change in internal energy. Take R= 278J/kg0K and γ = 1.4


Q-25 Derive characteristic of gas equation using an ideal gas laws Q-26 2 kg of gas enclosed in a closed vessel has absolute pressure 2 bar and temperature 27 °C. If it is compressed up to 6 bar pressure find Temperatureand change in internal energy. Take Cp=1.005 kJ/kg K, R = 0.287 kJ/kg K

Chapter 4

1. Define heat engine, heat pump and refrigerator.

2. Explain second law of thermodynamics(kelvin plank and clausius).

3. Prove COPHP – COPR = 1

4. Explain equivalence between kelvin plank and clausius statement.

5. Define reversible and irreversible process.

6. Explain carnot cycle.

7. Define entropy and prove that entropy is a point function.

8. Prove entropy equation for reversible, irreversible and isolated process.

Chapter 5 Q-1 Compare Otto cycle, Diesel cycle and Dual cycle with help of P-V and T-Ø diagram on following

(1) for constant compression ratio and heat addition (2) for constant compression ratio and heat rejection

Q-2 In on air standard Otto cycle compression ratio is 8 and at the start of compression initial temperature is 26° C and pressure is 1 barabsolute. If maximum temperature of cycle is 1080° C then find out(1) Work done (2) Heat supplied and (3) Thermal efficiency. Takeγ=1.41 and Cv= 0.714 KJ/Kg K Q-3 Explain Otto cycle with P-V and T-ϕ diagram and derive equation ofthermal efficiency for this cycle. Q-4 In one diesel engine diameter of cylinder is 17 cm and length of stroke is 25 cm , clearance volume is 450 cm3, fuel is cut off at 6%of stroke length find out air standard efficiency of engine .Takeγ=1.41 Q-5 Define an expression for air standard efficiency of an Otto cycle. Q-6 In an engine, working on diesel cycle compression ratio is 16 and fuel is cut off at 5% of stroke length. Find air standard efficiency. Take γ = 1.4 for air. Q-7 Derive equation of C.O.P. for reversed Brayton cycle for refrigeration purpose.


Q-8 In a refrigerator working on reverse Brayton cycle, air is compressed from 12OC and 1 bar pressure to 5 bar pressure. After compression air is cooled downto 22 OC in air cooler, Find (1) C.O.P. (2) work required Take Cp = 1.005kJ/kg.K&Cv = 0.718 kJ/kg.K Q-9 Explain Brayton Cycle with P-V and T-S diagram and Derive equation of Thermal efficiency of Brayton Cycle Q-10 An ideal otto cycle has temperature and pressure at beginning of isentropic compression as 250C and 25 bar respectively. Find the compression ratio, temperature and pressure at end of compression if λ = 1.4 and ηth =48% Q-11 Explain otto cycle with P-V and T-S diagram and Derive condition for maximum work during otto cycle in term of compression ratio. Q-12 An air standard diesel cycle has a compression ratio of 14.The pressure at the beginning of compression stroke is 1bar and the temperature is 270C. Themaximum temperature of the cycle is 25000C.Determine the efficiency ofthis cycle. Q-13 Derive air standard efficiency for diesel cycle. Q-14 One engine cylinder bore is 150mm and stroke is 225mm working on Otto cycle. Clearance volume of engine is 1250 cm3; find the air standard efficiency of Otto cycle. Q-15 Explain the Kelvin-Plank &Clausius statement of 2nd law of thermodynamics. Also deduce the equivalence between them on the basisof diagrammatic representation. Q-16 Explain Diesel cycle with P-V & T-S Diagram Q-17 Explain Diesel cycle with P-V & T-S Diagram Q-18 An engine working on otto cycle has a cylinder diameter of 150 mm and stroke of 225 mm. The clearance volume is 1250 cm3; Find the airstandard efficiency of the cycle. Take γ =1.4 Q-19 A Carnot engine works between temperature of 1000 K & 300 K. Find its efficiency and Minimum heat rejection rate for unit network output. Q-20 Explain concept of Air Standard Cycle and state its importance with assumption made Q-21 Derive Expression of Air Standard Efficiency for Brayton Cycle Q-22 In an engine working on Diesel Cycle, compression ratio is 14 and fuel cut off at 6% of stroke length. Find Air Standard Efficiency. ( Take γ = 1.4 ) Q-23 State the limitation of air standard cycle Q-24 Engine working on Diesel cycle the compression ratio is 16 and fuel is cut off at 5% of

stroke length. Find out air standardefficiency. Take γ= 1.4.

Q-25 Derive equation of C.O.P. for reversed Brayton cycle for refrigeration purpose. Q-26 A Compression Ignition Engine working between 60 °C and 800 °C. What could be the maximum efficiency of the cycle?


FLUID MECHANICS AND HYDRAULIC MACHINE (3331903)

Chapter # 1 (Fluid & Fluid Properties)

1. Define following terms and give their units :

(1)Dynamic Viscosity (2) Kinematic Viscosity (3) Density (4) Specific Volume

(5)Surface Tension (6) Bulk Modulus (7) Specific Density (8) Specific gravity (9)

specific volume OR Write fluid characteristics.

2. Define fluid & give their Classification.

3. Define fluid Mechanics & give their detail Classification.

4. Explain Newton‟s law of Viscosity.

5. Calculate the specific weight & Density of one liter of a liquid which weights 7 N.

6. Calculate density and specific gravity for 1 litre oil of 9.60 N weights.

7. A liquid has density 1600 kg/m3. Calculate its specific gravity.

Chapter # 2(Fluid statics)

1. Give the relation between Absolute pressure ,Gauge pressure and Atmospheric pressure

OR Define: (1) Absolute Pressure (2) Gauge Pressure (3) Vacuum Pressure

2. State & derive Pascal‟s law.

3. State limitation of Pizometer.

4. Classify Pressure Measuring Devices and flow measuring devices.

5. Enlist the different mechanical gauges.

6. Explain Differential manometer with sketch and suitable formula.

7. How capillary action is helpful for trees growing.

8. On what principle of Manometer works.

9. Derive the equation for head of inclined venture meter.

10. Draw a neat sketch of a Burden tube Pressure Gauge.

11. Derive relationship between pressure and pressure head for incompressible fluid.

12. Differentiate - Adhesion & Cohesion.

13. 1 bar = ________ Pa. (ii) 760 mm of Hg.= ______ m of water.

14. State the equation for measuring flow through following devices.

(1)Pitot Tube (2) Venturimeter (3) Flow Nozzle Circular orifice (4) Rectangular Notch

15. Horizontal Venturimeter is use for measuring discharge of water, whose inlet and throat

diameters are 30 cm and 15 cm respectively. The reading of differential manometer

connected between inlet and throat is 12 cm of mercury. If the Co-efficient of

Venturimeter is 0.98, find the discharge.

16. A pipe having diameter of 30cm at point „A‟ and 40cm at point „B‟. Point „A‟ and „B‟ are

at 3 meter and 7 meter up from the datum respectively. Flow rate through pipe is 0.7

m3/sec. If pressure at point „A‟ is 5 meter of water, find the pressure at point „B‟.

17. A simple manometer is used to measure pressure of flowing water. The right limb of

manometer is opened to atmosphere and left limb is attached to centre of pipe. The center


of pipe is at a level of mercury in right limb. If the difference of mercury height between

to limb is 14 Cm. then calculate pressure.

18. Calculate the velocity of water through Pitot tube, if coefficient of tube is 0.98.

Stagnation and static pressure are 5 m and 4 m respectively.

19. Determine the pressure in N/m2 at a depth of 5m below the surface of an oil specific

gravity of 0.75.

20. A simple U-tube manometer contains mercury is used to measure the pressure of fluid

flowing through pipe line having sp.gravity 0.9.It,s right limb is open to atmosphere and

left is connected to pipe ,the center of pipe is 20 cm below the level of mercury in right

limb. If the difference in level of mercury in both limb is 40 cm., then find pressure in the

pipe in N/m2.

21. A simple U-tube manometer containing mercury connected to a pipe in which a fluid of

specific gravity 0.8 and having vacuum pressure is flowing. The other end of the

manometer is open to atmosphere. Find the vacuum pressure in pipe if the difference of

mercury level in the two limb is 40 cm and the height of the fluid in the left from the

center of pipe is 15 cm below.

22. An oil of specific gravity 0.8 is flowing through a venturimeter having inlet diameter 20

cm and throat diameter 10 cm. The oil mercury differential manometer shows a reading

of 25 cm. Calculate the discharge of oil through the horizontal venturimeter. Take co -

efficient of discharge 0.98.

Chapter # 3(Fluid Kinematics)

1. Define: (1) Stream line (2) Streak line (3) Path line (4) Stream tube

(5) Co-efficient of discharge (6) Co-efficient of velocity

(7) Reynold‟s number (8) Pressure Energy (9) Potential Energy

(10) Kinetic energy (11)control volume (12)

2. List only name of Different Types of fluid flow and state which equations are derived

from it.

3. Write momentum equation & explain its importance in fluid kinematics.

4. Derive continuity equation.

5. Explain the term “Impact of jet”. Derive the equation of force due to impact of jet on

stationary flat vertical plate.

6. Water flow with 6 m/s velocity with 3200 lit/minute through a pipe than decide the size

of pipe.

7. Water flow with 300 liter/sec in a pipe. The diameter of pipe is 500 mm and pressure is

900 kPa. If the centre line of pipe is at 200 m from the base, find the total energy.

8. If maximum velocity of fluid is 5 m/s and quantity of fluid flow is 3000 lit/min then find

out Diameter of pipe.

9. Water flow with 2 lit/s from pipe of 200 mm diameter with 400 kpa pressure and pipe is

100 mm at a height from datum than find out Total Energy for ideal fluid.


10. A 5cm diameter of jet moving with a velocity of 30m/s, is strikes a moving flat plate

normal to the jet. Plate is moving with a velocity of 8 m/s. Calculate work done per sec

and efficiency.

Chapter # 4(Fluid Dynamics & Flow Measurement)

1. State the limitation & applications of Bernoulli‟s equation and derive it from energy

equation.

2. Derive Bernoulli‟s Equation from Euler‟s Equation.

3. Differentiate between notch and weir and derive an equation for discharge over

rectangular notch.

4. Write down only Euler Equation.

5. Explain following Hydraulic coefficient.

6. Explain Orifice meter with sketch.

7. Sketch circular type orifice.

8. Explain with neat sketch “Rota meter”.

9. Derive an expression for measuring discharge through venturimeter.

10. Water flows through a triangular notch of 1200, under a head of 50cm. Calculate

discharge in litre/sec, if coefficient of discharge is 0.6.

11. A horizontal venturimeter 20cm X 10cm is use to measure flow of oil of specific gravity

0.8. Rate of flow of oil is 0.75m3/sec. If venture meter constant is 0.98, find deflection of

oil -mercury manometer.

12. Discharge through Rectangular Notch is 48 m3/min. When head of water is one third of

length of notch, calculate length of Notch. Take Cd = 0.62

13. Water is flowing through a pipe of 150 mm diameter and 400 m length. If discharge is

35.4 lit/sec, calculate head loss due to friction. Take f = 0.01.

14. Water flow through a pipe having dia. 0.2 m with 4 m/s than find out discharge from

pipe.

15. Water flow with 30 cm head through rectangle notch having 60 cm length than find out

discharge in lit/sec if Cd = 0.65

16. Calculate the diameter of pipe if the water is flowing in pipe with maximum velocity of 5

m/s and 3000 lit/min. rate.

17. The head of water over a rectangular notch is 90 cm. The discharge is 300lit/sec. Find the

length of the when co-efficient of discharge is 0.62

18. A right angled V-notch is used for measuring a discharge of 30 lit/sec of a water. Find

head of a water. Take co-efficient of discharge 0.62


Chapter # 5(Flow Through Pipes)

1. Explain water hammer effect and arrangement to overcome water hammer effect.

2. Explain the Reynolds experiment with neat sketch.

3. State how the Reynold‟s number classifies the types of flow?

4. Explain Surge tank and Moody‟s chart.

5. An oil specific viscosity 0.15 N-s/m2 and specific gravity 0.81 flows through a pipe of

140mm diameter at the flow rate of 0.03 m3/sec. Determine whether flow is laminar or

turbulent.

Chapter # 6(Hydraulic Pumps & Prime Movers)

1. Explain the construction and working of centrifugal pump with neat sketch. Also state the

fault and remedies of a centrifugal pump.

2. Give the classification of turbines.

3. Write the purpose of Air vessel in reciprocating pump.

4. Describe Gear Pump with neat sketch.

5. Explain Draft tube and priming with neat sketch.

6. Give the classification and applications of Pumps. OR difference between them.

7. Difference between Impulse Turbine and Reaction Turbine.

8. Explain Multi stage pump in series and parallel.

9. Describe reciprocating pump with neat sketch.

10. Write the function of guide vane and runner in turbine.

11. Write selection criterion for pipe and pipe size.

12. What is meant by specific speed of turbine? Give criteria for selection of turbine.

13. Sketch the volute type centrifugal pump.

14. Explain term (i) Positive displacement pump (ii) Rota dynamic pump

15. Describe construction of Kaplan turbine.

16. Write method for turbine maintenance.

17. Write the advantages and disadvantages of air motor.

18. Explain the construction and working of Pelton wheel.

19. Explain with neat sketch Lay-out of a Hydro Electric Power plant and also explain

efficiency of Turbine.

20. A centrifugal pump discharges water at the rate of 50 lit/sec against 25 meter head. Find

the power required to drive pump, if the head loss is 14 meter and overall efficiency is

85.5%.

21. Discuss the important of specific speed of a turbine. Find the specific speed and state

types of turbine, if head is 25 meter and the speed is 150rpm and the power is 7.5MW.

22. Find the specific speed of turbine and the type of turbine, if total head of is 25m and the

power produced is 7.5MW running at 150 rpm.

23. Find the specific speed of turbine and type of turbine, if head is 50 m and turbine

discharge 10 m3/s which running at 350 rpm. Take efficiency is 85%.


24. A C.F. pump transmits 14.71kw power against the total head of 15m of water. Find the

discharge of water in liter/minute, if efficiency of the pump is 72%.

25. A centrifugal pump discharges water at the rate of 40 lit/s. against 30m.head. If power

required to drive the pump is 22 kw. And friction head loss is 15 m. than find overall

efficiency of the pump.

Chapter # 7(Hydro pneumatic Elements & devices)

1. Explain the working of the following Hydraulic machines with neat sketch.

(i) Hydraulic accumulator (ii) Hydraulic press.

2. Draw the different symbols.

(i)Electric motor (ii) Hydraulic pump (iii) Hydraulic motor (iv) Double acting cylinder

(v) Manual shut off valve (vi)Fixed displacement Air compressor (vii)Elbow Tee, cross-

section

3. Explain working of Hydraulic ram with neat sketch.

4. Explain Hydraulic Cylinders. What do you mean by single acting and double acting

cylinder in hydraulics?

5. Explain the working of Hydraulic lift with neat sketch.

6. Explain Pressure Relief valve.

7. Explain the working principle of Hydraulic press with sketch.

8. Explain Hydraulic fluid Coupling.

9. Explain application of surface and depth filters used in hydraulic system.

10. Name the element use in pneumatic circuit.

11. Differentiate between hydraulic system and pneumatic system.

12. Write Construction, working and advantages of Hydraulic Intensifier with neat sketch.

13. Write Construction & working of single acting reciprocation pump with neat sketch.

Krupa J. Vaniya Subject In-Charge, Mechanical Engineering Dept. NGI - Diploma


QUESTION BANK

STRENGTH OF MATERIAL (3331904)

1. Define: Stress, Strain, Modulus of Elasticity, Poisson’s Ratio, Lateral strain, Shear force,

Proof resilience, Modulus of resilience, Section Modulus, Moment of resistance, Neutral

axis

2. Define: (i) Modulus of rupture (ii) Beam of uniform strength (iii) Moment of inertia

3. Define: Eccentricity , Core of section , Torque , Principal plane, Strain Energy , Impact

Load , Temperature Stress

4. Define: Point of contra flexure

5. Define (1) linear strain and lateral strain and (2) slope and deflection of beam

6. Define Modulus of Elasticity, Bulk Modulus, radius of gyration and slenderness ratio

7. Define : Crushing load, Buckling load/Crippling load, Rankine Empirical formula, Angle

of twist and polar moment of inertia

8. Write the Euler’s formula for crippling load and state assumptions

9. Write down equation for torsion and explain each term.

10. Describe points to be kept in mind while drawing SF and BM diagrams

11. Explain stress- strain curve for mild steel bar under axial tension

12. Write a note on different types of loads, supports and beams with neat sketches

13. Draw the different end conditions of column with effective length

14. Draw the core of rectangular, hollow rectangular, circular and hollow circular sections

15. Write down the assumptions made in the simple bending theory

16. State and explain the parallel axes theorem and perpendicular axes theorem

17. Draw the shear stress distribution diagram for (i) Rectangular section (ii) T Section (iii) I

section (iv) Circular section

18. Differentiate between shear stress and bending stress

19. What do you understand by Malleability and Ductility?

20. Classification of engineering materials

21. Differentiate between Charpy Impact test and Izod Impact test

Lecturer

Kankesh K. Dave,

Subject In-Charge,

Mechanical Engineering Dept.

NGI - Diploma

NOBLE GROUP OF INSTITUTIONS, JUNAGADH FACULTY OF ENGINEERING, DEPARTMENT OF ELECTRICAL ENGINEERING

Subject/ Subject Code

Semester/ Branch

Issue Date Due Date

AEEE/3331905 3rd/ Mechanical _____________ _________________

CHAPTER-01

Q – 1 How to Produce Energy in Different Power Plants?

(a) Thermal Power Station

(b) Hydro Power Plant

(c) Nuclear Power Station

(d) Diesel Power Station

Q – 2 Give Difference between D.C.Current and A.C.Current.

Q – 3 Explain Right Hand Rule & Cork Screw Rule.

Q – 4 Explain Magnetic Hysteresis Loop.

Q – 5 Evaluate Total Resistance While Three Resistors Connecting in Series.

Q – 6 Evaluate Total Resistance While Three Resistors Connecting in Parallel.

Q – 7 Give Difference Between Series Circuit and Parallel Circuit.

Q – 8 Explain Ohm’s Law and its Limitations.

Q – 9 How to Alternating EMF is Generated and Show the Waveform.

Q – 10 Explain Terms Related to the Magnetic Circuit.

I. MMF

II. Magnetic Field Strength

III. Reluctance

IV. Permeability

V. Permeance

VI. Magnetic Flux

VII. Flux Density


Q – 11 Explain Terms Related to the Electric Circuit

I. Electric Current

II. EMF

III. Potential Energy

IV. Resistance

V. Specific Resistance

VI. Conductor

VII. Insulator

VIII. Semiconductor

IX. Conductance

X. Conductivity

XI. Work

XII. Power

XIII. Energy

Q – 12 Explain Terms Related to the Alternating Current

I. Cycle

II. Time Period

III. Frequency

IV. Instantaneous Value

V. Amplitude

VI. RMS Value

VII. Average Value

VIII. Form Factor

IX. Peak Factor

X. Phase

XI. Power Factor

Viral K. Harpal Subject In-Charge, Dept. of Electrical Engineering NGI- Junagadh

Suresh B. Tank H.O.D.

Dept. of Electrical Engineering NGI- Junagadh



Semester/ Branch

Issue Date Due Date


CHAPTER-02

Q – 1 Give Name of Different types of Wires and Explain any Four with necessary Figure.

Q – 2 Explain Construction of Under Ground Cables.

Q – 3 Explain Different Types of Switches.

Q – 4 Explain Different Types of Fuses.

Q – 5 Explain Different Tools Use For Wiring.

Q – 6 Explain Moving Iron Repulsion Type Ammeter with Necessary Figure.

Q – 7 Explain Voltmeter with Necessary Figure.

Q – 8 Explain Multitmeter with Necessary Figure.

Q – 9 Explain principle and construction of Induction Type Single-Phase Energy Meter with

Necessary Figure.

Q – 10 Explain Block Diagram of CRO.






Semester/ Branch

Issue Date Due Date


CHAPTER-03

Q – 1 Explain Construction of D.C Generator.

Q – 2 Explain Self Excited D.C.Generator and Advantage of D.C.Generator.

Q – 3 Explain Principle, Construction of D.C.Motor.

Q – 4 Why Starter is Require in D.C.Motor?

Q – 5 Explain Stationary Field and Rotating Armature Type Alternator.

Q – 6 Explain 3-Phase Star Connection.

Q – 7 Explain 3-Phase Delta Connection.

Q – 8 Give Difference Between SCIM and WRIM.

Q – 9 Why Single Phase Induction Motor is Not Self Starting?

Q – 10 Explain Capacitor Start Capacitor Run Single-Phase Induction Motor.

Q – 11 Explain about D.C.Servo Motor.

Q – 12 Explain about Stepper Motor.

Q – 13 Explain Basic Principle, Construction and Working of Transformer.

Q – 14 Difference Between Single Phase Core and Shell Type Transformer.

Q – 15 Explain Auto-Transformer.






Semester/ Branch

Issue Date Due Date


CHAPTER-04

Q – 1 Explain Full-Wave Rectifier with Two-Diodes with Necessary Figure and Waveform.

Q – 2 Explain Full-Wave Bridge Rectifier with Necessary Figure and Waveform.

Q – 3 Why Filter is Required in Rectifier Circuit? Explain Any One Filter.

Q – 4 What is UPS? Explain Types Of UPS.

Q – 5 Explain About MCB.

Q – 6 Explain About ELCB.

Q – 7 Explain Block Diagram of RPS.

Q – 8 Explain Causes Of Electrical Accidents.

Q – 9 Which Safety Practice to be Followed While Carrying Out Electrical Work.

Q – 10 What is Earthing? Give Necessity and types of Earthing.

Q – 11 With Neat Sketch Explain Pipe-Earthing.

Q – 12 Give a Note About Opto-Isolator.






Semester/ Branch

Issue Date Due Date


CHAPTER-05

Q – 1 What is Resistor? Give its Classification.

Q – 2 Give Types of Fixed-Resistor and Explain Any One.

Q – 3 What is Capacitor? Give its Classification.

Q – 4 Give Types of Fixed-Capacitor and Explain Any One.

Q – 5 What is Inductor? Give its Classification.

Q – 6 Explain P-type Semi-Conductor and N-type Semi-Conductor.

Q – 7 Explain P-N Junction Diode.

Q – 8 What is Transistor? Explain NPN Transistor.

Q – 9 Explain Bias Arrangement of Transistor and its Advantages.

Q – 10 Explain SCR With Schematic Scheme and Give its Advantages.

Q – 11 Explain Construction, Working and Applications of

(I) DIAC

(II) TRIAC

Q – 12 Explain about PLC? Give its Applications.

Q – 13 Explain PLC with Simple Block Diagram.

Q – 14 Explain About MICRO-CONTROLLER.




Documents

NOBLE GROUP OF INSTITUTIONS JUNAGADH FACULTY OF E ...ngivbt.edu.in/wp-content/uploads/2018/07/QUESTION-BANK_3rd-Sem.pdf · 15. Classify the forging process and explain drop forging