UNIT -1

SHORT QUESTIONS
1. Define Ohms Law &Its Limitations?
2. Define peak factor&from factor?
3. Define RMS value&Average Value?
4. Define time period &frequency?
5. Define phase and phase difference?
ESSAY QUESTIONS
1. State and explain how superposition theorem is applied for solving the
network with suitable example?
2. State and explain superposition theorem for given network

3. Explain the following real power, reactive power, apparent power and
power factor?
4. A circuit consist of 25ohms and capacitance 5micro farads connected in a
series. if an ac voltage of 200v (rms),50hz is applied across the circuit ,find
the input current ,power factor, real power and reactive power flow in the
coil.
5. For the circuit of figure below find the voltage and current across 2ohms
resistor
 6. In the network shown in figure below, find all branches current and voltage
drops across all resistors.

7. For the given RLC series circuit determine i) impedance, ii) current ,iii)
voltage across each component and iv) power factor)power

8.An RL series circuit of R=4.7kohm and L=1H is connected across a voltage

source of 150V, 50HZ.determine impedance, power factor, current flowing in
the circuit?
9. State and explain KCL &KVL? And explain with suitable examples?
10.Derive the expression for the RMS value of a sinusoidal wave form?

UNIT-II
SHORT QUESTIONS
1. Define motor & Generator principle?
2. Write the applications of electrical machines?
3. Define transformer?
4. Write Classification of measuring instruments?
5. Define measurent?
ESSAY QUESTIONS
6. Explain the construction and working principle of operation of DC Motor with
neat sketch.
7. Explain theprinciple ofoperation of DC Generatorwith neat sketch.
8. With neat sketch, discuss the principle of operation of a single-phase
transformer.
9. With neat sketch discuss the principle of operationofa three phase induction
motor.
10.Derive the EMF equation for DC Generator.
11.Explain the principle of operation of Alternator.
12.Explain theConstruction and working of Permanent Magnet Moving Coil .
13.Explain theConstruction and working of Moving Iron Instrument.
14. Find the unknown resistance for Wheat Stone Bridge.
15. Difference between MC and MI Instrument.
 UNIT-III
SHORT QUESTIONS
1.Define power generation. What are the primary sources of electric power
generation?
2. Differentiate between renewable and non-renewable energy sources. Provide
examples.
3. Define unit and write types of earthing system?
4. Write advantages and disadvantages of fuse and MCB?
5. Write the safety precautions to avoid electric shock?

ESSAY QUESTIONS
6. Explain the working principle of a solar power plant with neat diagram.
7. Explain the principle of hydroelectric power generation with neat diagram.
8. Explain the principle of wind power generation with neat diagram.
9. Explain the principle of Nuclear power generation with neat diagram.
10. Define electric tariff. Why is it necessary? Explain the concept of two-part tariff.
11. What is a two-part tariff? Derive its formula.
12. Calculate the electricity bill for domestic consumers and write the power ratings
of household appliances?
UNIT-IV
SHORT QUESTIONS
1. Define diode with its symbol?
2. Define zener effect?
3. Write the applications of diode.
4. Define transistor and its configurations?
5. Draw PNP and NPN symbol?.
ESSAY QUESTIONS
6. What is a PN junction diode? Explain its working principle.
7. Explain the concept of forward bias and reverse bias in PN junction diodes
8. Explain the working of Zener diode? with its V-I characteristics.
9. Explain the working of a Bipolar Junction Transistor with its input and output
characteristics of a transistor.

UNIT-5
SHORT QUESTIONS
1. Define rectifier?
2. Define filter& types of filter?
3. What is need of power supplies?
4. Define amplifier?
5. Write the applications of RC coupled amplifier?
ESSAY QUESTIONS
1. Explain the block diagram of a dc power supply?
2. Explain the block diagram of a public address system?
3. Explain the block diagram of an electronic instrumentation system?
4. Explain working of full wave rectifier with its output waveforms?
5. Explain working of full wave capacitor filter rectifier with its output waveforms?
6. Explain the working of zener diode as voltage regulator?
7. Explain the working of RC coupled amplifier with its frequency response?

UNIT -6
2-MARKS QUESTIONS
1. Name the universal gates?
2. Write the difference between binary code and gray code?
3. What are the types of flip-flops?
4. Difference between latch and flip-flop?
5. Define register and counter?
10 MARKS QUESTIONS
1. a.)Write the universal gates? Realize XOR gate using universal gates.
b.) Difference between sequential and combinational circuits?
2. Design hall adder and full adder and explain?
3. Define flip-flop? & types of flips- flops Write the help of logic diagram and truth
table
4. Convert:
(1AD.E0)16= (?)10= (?)2
(356.15)8 = (?)2= (?)10
5. Explain logic gates with its truth table and logic diagram?
6. Convert the following binary numbers to decimal, octal and hexadecimal numbers.
(i) 100101.101 (ii) 101000101011 (iii) 10101100.010111
7. Explain the properties of Boolean algebra.
8. Write the help of logic diagram and truth table explain SR and T flips- flops.
9. Write the help of logic diagram and truth table explain JK and D flips- flops.