1000+ Alternator Multiple Choice Questions and Answers Pdf - 2

Question: 6

In an alternator, armature reaction is considered equivalent to

(A) fictitious resistance

(B) fictitious reactance

(C) fictitious conductance

(D) fictitious impedance

Question: 7

For the alternators operating in parallel, if the load shared by one of them is to be increased, its field excitation is

(A) to be kept constant but input torque should be increased

(B) to be kept constant but input torque should be decreased

(C) to be strengthened keeping input torque same

(D) to be weakened keeping input torque same

Question: 8

The power factor of an alternator is determined by its

(A) speed

(B) load

(C) excitation

(D) prime mover

Question: 9

In a synchronous machine, if the field flux axis is ahead of the armature field axis, in the direction of rotation, the machine is working as

(A) synchronous motor

(B) asynchronous motor

(C) synchronous generator

(D) asynchronous generator

Question: 10

The rotor preferred for alternators applied to hydraulic turbines are

(A) solid rotor type

(B) cylindrical rotor type

(C) salient pole type

(D) any of the above