(Following paper code and Roll no. to be filled in your answer book. )

PAPER CODE NEE101 RollNo.

IIMT ENGINEERING COLLEGE, MEERUTB.TECH. (FIRST YEAR) CS, EN

FIRST SESSIONAL EXAMINATION BASIC ELECTRICAL ENGINEERING

Time: 2 Hours Total Marks: 50Note:- Attempt all Sections . Assume any missing data , if any.

Que.-1: Attempt any two parts of the following. 5x2=10

a.) Explain and derive maximum power transfer theorem. b.) Using Norton’s theorem find current I.

c.) Derive the relation between the line values and phase values in a three phase star connection with proper phasor diagram.

Que.-2: Attempt any two parts of the following. 5x2=10

a.) Determine the form factor of the waveform given below.

a.) Define Explain resonance in a series RLC circuit. Also drive for resonance frequency, resonance curve and quality factor.

b.) Derive the relation for power in a pure capacitive circuit with proper wave and phasor diagram and also explain the capacitive reactance.

Ques.3. Attempt any two parts of the following 5x2=10a.) Prove that for a series resonance circuit Fr = √F1F2.

b.) For the circuit shown , determine resonance frequency, total impedance of circuit at resonance, bandwidth and Quality factor.

c.) Derive the relation for maximum power transfer to the circuit and also the efficiency at maximum power transfer.

Que.-4: Attempt any two parts of the following 5x2=10

a.) A coil having a resistance of 50 ohm and inductance of 0.02H , is connected in parallel with a capacitor of 25 micro farad, across a 200 volt, 50 Hz supply. Find the current in coil and the capacitor. Also find total current taken from supply, overall power factor and phasor diagram.

b.) For the circuit shown in figure find i. Current in each branch , ii.Vab and bc and power loss in circuit

c.) Derive the form factor and peak factor of full wave rectifier output

Que.-5: Attempt any two parts of the following. 5x2=10

a.) Derive the relation for resonance frequency and impedance in a parallel RLC network.

b.) A 100 v 80 W lamp is to be operated on 240 v 50 Hz supply. Find the value of (i) Non- inductive Resistance (ii) Pure inductance (iii) pure capacitance would be required in order that he lamp is run on correct voltage. Which method is preferable and why.

c.) Using thevenin theorem find current I in the given circuit