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Electrical Network Theorem MCQs

1) An active element in a circuit is one which ………

2. supplies energy
3. both receives and supplies energy
4. none of the above
EXPLANATION

2) A passive element in a circuit is one which ………

2. supplies energy
3. both receives and supplies energy
4. none of the above
EXPLANATION

3) An electric circuit contains …….

1. active elements only
2. passive elements only
3. both active and passive elements
4. none of the above
EXPLANATION

4) A linear circuit is one whose parameter ………

1. changes with change in current
2. changes with change in voltage
3. changes with both voltage and current
4. do not changes with voltage and current
EXPLANATION

5) The number of nodes in below given figures are

1. one
2. two
3. three
4. four
EXPLANATION

6) The superposition theorem is used when the circuit contains ………….

1. a single voltage sources
2. a number of voltage sources
3. only passive elements
4. none of the above
EXPLANATION

7) Norton theorem is ……………. thevenin’s theorem.

1. the same as
2. converse of
3. cannot say
4. none of the above
EXPLANATION

8) In the analysis of a vacuum tube circuit,we generally use …………… theorem

1. superposition
2. thevinin
3. norton
4. reciprocity
EXPLANATION

9) Norton theorem is ………….. form of an equivalent circuit.

1. both current and voltage
2. current
3. voltage
4. none of the above
EXPLANATION

10) In the analysis of transistor theorem, we usually uses ………… theorem.

1. norton
2. thevinin
3. reciprocity
4. superposition
EXPLANATION

11) For transfer of maximum power, the relation between load resistance R and internal resistance r of the voltage source is

1. R = 2r
2. R = 1.5r
3. R = r
4. R = 0.5r
EXPLANATION

12) Under the condition of maximum power transfer, the efficiency is

1. 100%
2. 75%
3. 50%
4. 25%
EXPLANATION
1. 13) The open circuited voltage at the transfer of load R is 30 V. Under the condition of maximum load power transfer, the load voltage will be ……
2. 30 V
3. 15 V
4. 10 V
5. 5 V
EXPLANATION

14) The maximum power transfer theorem is used in ………

1. electronic circuits
2. power systems
3. home lightning system
4. none of the above
EXPLANATION

15) Under the condition of maximum power transfer, a voltage source is delivering a power of 3 W to the load. The power generated by the source is ………….

1. 45 W
2. 30 W
3. 60 W
4. 90 W