1000+ Alternator Objective Questions and Answers Pdf - 2

Question: 6

An exciter for a generator is a

(A) series generator

(B) shunt generator

(C) shunt motor

(D) series motor

Question: 7

At leading power factor, the armature flux in an alternator

(A) does not affect the rotor flux

(B) opposes the rotor flux

(C) aids the rotor flux

(D) distorts the rotor flux

Question: 8

Salient pole type rotors as compared to cylindrical pole type are

(A) larger in diameter and smaller in axial length

(B) smaller in diameter and larger in axial length

(C) large in diameter as well as axial length

(D) small in diameter as well as axial length

Question: 9

Turbo alternators usually have

(A) 2 poles

(B) 4 poles

(C) 8 poles

(D) 12 poles

Question: 10

Hydrogen is used in large alternators mainly to

(A) reduce eddy current losses

(B) strengthen the magnetic field

(C) reduce distortion of waveform

(D) cool the machine