Complex AC MCQs

Question 1

In a power system, reactive power is necessary for

Accepted Answer

counteracting the effect of reactance in the transmission system

Answer

power transmission

Answer

stabilishing the voltage level

Answer

none of the above

Question 2

The ratio of the bandwidth to the resonance frequency is called the

Accepted Answer

selectivity

Answer

impedance

Answer

susceptance

Answer

quality factor

Question 3

Which of the following statement is incorrect?

Accepted Answer

Current source is a passive element

Answer

Resistance is a passive element

Answer

Voltage source is an active element

Answer

Conductance is a passive element

Question 4

A capacitor with initial charge chi at t =0+ acts as

Accepted Answer

voltage source

Answer

current source

Answer

short-circuit

Answer

open-circuit

Question 5

A network is said to be non-linear if it does not satisfy

Accepted Answer

both (a) and (b)

Answer

homogeneity condition

Answer

superposition condition

Answer

associative condition

Question 6

Which of the following statement is incorrect?

Accepted Answer

Ideal voltage source is one whose internal conductance is zero

Answer

Ideal voltage source is one internal resistance is zero

Answer

!dal voltage source is one whose generated voltage is equal to the available terminal voltage

Answer

Ideal current source is one whose internal conductance is zero

Question 7

A capacitor with no initial charge at t = 00 acts

Accepted Answer

open-circuit

Answer

voltage source

Answer

current source

Answer

short-circuit

Question 8

In the above problem, the average power consumed in 10 i/ resistor will be

Accepted Answer

720W

Answer

240 W

Answer

480 W

Answer

960 W

Question 9

Which of the following is not a nonlinear element?

Accepted Answer

Heater coil

Answer

Transistor

Answer

Diode

Answer

Electric arc with unlike electrodes