1000+ Alternating Current MCQS Questions and Answers Pdf - 1

Question: 1

An alternating current is converted to direct current by

(A) motor

(B) rectifier

(C) transformer

(D) dynamo

Question: 2

A choke is preferred to a resistance for limiting current in an a.c. circuit because

(A) current strength increases

(B) current becomes wattles

(C) there is no wastage of energy

(D) choke is cheap

Question: 3

The purpose of choke in a fluorescent tube is

(A) to increase the voltage momentarily

(B) to decrease the voltage momentarily

(C) to increase the current

(D) to decrease the current

Question: 4

A choke coil is a coil having

(A) high inductance and high resistance

(B) high inductance and negligible resistance

(C) low inductance and low resistance

(D) low inductance and high resistance

Question: 5

Power absorbed in a pure inductive circuit is zero because

(A) reactive and active components of current cancel out

(B) power factor of the circuit is zero

(C) active component of current is maximum

(D) reactive component of current is zero