1. a. What is Resistance? Derive the equivalent resistance for (i) resistors connected in
series; (ii) resistors connected in parallel.
b. State Ohm’s law. What are the limitations of Ohm’s law?
2. With the help of suitable examples, explain the concepts of Kirchhoff’s current and
voltage laws.
3. Explain the steps involved in applying mesh analysis method. With an example for an
electric circuit explain the procedure for solving it using mesh analysis.
4. Explain the steps involved in applying nodal analysis method. With an example explain
the procedure for solving an electric circuit using nodal analysis.
5. State and explain the Superposition theorem for DC circuits with independent sources.
6. State and explain the procedure for solving network using Thevenin’s Theorem.
7. State and explain the maximum power transfer theorem. Derive the expression for the
maximum power delivered to the load. Give an example.
8. Define and explain maximum value, average value, rms value, form factor and peak
factor of an alternating wave.
9. Determine the average and effective values of saw- tooth waveform, square wave form
and sinusoidal wave.
10. Explain the ac analysis on elements R, L (pure inductor), & C (pure capacitor) with
help of its phasor diagram. And prove that the average power taking by a pure
inductor and capacitor fed with a sinusoidal supply in a circuit is zero.
11.
a. Explain the analysis of series R-L circuit when it is applied by single phase AC
supply with help of its phasor diagram.
b. A coil consists of a resistance of 100Ω and an inductance of 200 mH. If an
alternating voltage, v, given by v=200 sin 500t volts is applied across the coil,
calculate (a) the circuit impedance, (b) the current flowing, (c) the phase angle
between voltage and current, (d)power factor, (e) real power, (f) reactive power and
(g) apparent power.
12.
a. Explain the analysis of series R-C circuit when it is applied by single phase AC
supply with help of its phasor diagram.
b. A resistor of 25Ω is connected in series with a capacitor of 45μF. Calculate (a) the
impedance, and (b) the current taken from a 240V, 50 Hz supply. Also find the
, phase angle between the supply voltage and the current, power factor, real power,
reactive power, and apparent power.
13.
a. Explain the analysis of series R-L-C circuit when it is applied by single phase
AC supply with help of its phasor diagram.
b. A coil of resistance 5Ω and inductance 120mH in series with a 100μF capacitor,
is connected to a 300V, 50 Hz supply. Calculate (a) impedance of the circuit,
(b) the current flowing, (c) the phase difference between the supply voltage and
current (d) the power factor, (e) real power, (f) reactive power and (g) apparent
power.
14. Explain the power triangle. Define real power, reactive power, and apparent power.
15. Derive the relationship between line voltage & phase voltage and line current & phase
current of a 3-phase delta connected system and draw phasor diagram.
16. Derive the relationship between line voltage & phase voltage and line current & phase
current of a 3-phase star connected system and draw phasor diagram.
17. Explain measurement of three-phase power using two-wattmeter method and explain
the effect of load on meter readings.
18. Explain measurement of three-phase power using three-wattmeter method with a neat
sketch.
19. Explain the Constructional details of D.C machine with neat sketch.
20. Explain the operation of (single loop) DC generator. And explain commutator action in
DC machine.
21. Explain the working principle and operation of DC motor. List out applications of all
types of DC generators and motors.
22. Explain the construction details and working of single-phase transformer and list the
applications of transformer.
23. Explain the construction details of three phase induction motor. Explain different
types of three-phase induction motors and its applications.
24. Explain the working principle of three phase induction motor.
25. Explain the construction details and working of a single-phase induction motor. And
explain double field revolving theory.
26. What are the different types of single-phase induction motors? And explain them with
neat circuit diagrams.
27. Explain construction, operation, and applications of stepper, Servo, and Stepper motors.
series; (ii) resistors connected in parallel.
b. State Ohm’s law. What are the limitations of Ohm’s law?
2. With the help of suitable examples, explain the concepts of Kirchhoff’s current and
voltage laws.
3. Explain the steps involved in applying mesh analysis method. With an example for an
electric circuit explain the procedure for solving it using mesh analysis.
4. Explain the steps involved in applying nodal analysis method. With an example explain
the procedure for solving an electric circuit using nodal analysis.
5. State and explain the Superposition theorem for DC circuits with independent sources.
6. State and explain the procedure for solving network using Thevenin’s Theorem.
7. State and explain the maximum power transfer theorem. Derive the expression for the
maximum power delivered to the load. Give an example.
8. Define and explain maximum value, average value, rms value, form factor and peak
factor of an alternating wave.
9. Determine the average and effective values of saw- tooth waveform, square wave form
and sinusoidal wave.
10. Explain the ac analysis on elements R, L (pure inductor), & C (pure capacitor) with
help of its phasor diagram. And prove that the average power taking by a pure
inductor and capacitor fed with a sinusoidal supply in a circuit is zero.
11.
a. Explain the analysis of series R-L circuit when it is applied by single phase AC
supply with help of its phasor diagram.
b. A coil consists of a resistance of 100Ω and an inductance of 200 mH. If an
alternating voltage, v, given by v=200 sin 500t volts is applied across the coil,
calculate (a) the circuit impedance, (b) the current flowing, (c) the phase angle
between voltage and current, (d)power factor, (e) real power, (f) reactive power and
(g) apparent power.
12.
a. Explain the analysis of series R-C circuit when it is applied by single phase AC
supply with help of its phasor diagram.
b. A resistor of 25Ω is connected in series with a capacitor of 45μF. Calculate (a) the
impedance, and (b) the current taken from a 240V, 50 Hz supply. Also find the
, phase angle between the supply voltage and the current, power factor, real power,
reactive power, and apparent power.
13.
a. Explain the analysis of series R-L-C circuit when it is applied by single phase
AC supply with help of its phasor diagram.
b. A coil of resistance 5Ω and inductance 120mH in series with a 100μF capacitor,
is connected to a 300V, 50 Hz supply. Calculate (a) impedance of the circuit,
(b) the current flowing, (c) the phase difference between the supply voltage and
current (d) the power factor, (e) real power, (f) reactive power and (g) apparent
power.
14. Explain the power triangle. Define real power, reactive power, and apparent power.
15. Derive the relationship between line voltage & phase voltage and line current & phase
current of a 3-phase delta connected system and draw phasor diagram.
16. Derive the relationship between line voltage & phase voltage and line current & phase
current of a 3-phase star connected system and draw phasor diagram.
17. Explain measurement of three-phase power using two-wattmeter method and explain
the effect of load on meter readings.
18. Explain measurement of three-phase power using three-wattmeter method with a neat
sketch.
19. Explain the Constructional details of D.C machine with neat sketch.
20. Explain the operation of (single loop) DC generator. And explain commutator action in
DC machine.
21. Explain the working principle and operation of DC motor. List out applications of all
types of DC generators and motors.
22. Explain the construction details and working of single-phase transformer and list the
applications of transformer.
23. Explain the construction details of three phase induction motor. Explain different
types of three-phase induction motors and its applications.
24. Explain the working principle of three phase induction motor.
25. Explain the construction details and working of a single-phase induction motor. And
explain double field revolving theory.
26. What are the different types of single-phase induction motors? And explain them with
neat circuit diagrams.
27. Explain construction, operation, and applications of stepper, Servo, and Stepper motors.
