1000+ Alternator MCQ Questions and Answers Pdf - 2

Question: 6

Salient pole rotors are used where

(A) low and medium speed prime movers are available

(B) high speed prime movers are available

(C) floor space is available in plenty

(D) high frequency current is required

Question: 7

Overheating of generator’s winding

(A) reduces power factor

(B) reduces generated voltage

(C) does not have any significant effect

(D) reduces life of the machine

Question: 8

In an alternator zero power factor method is used to find the

(A) armature resistance

(B) voltage regulation

(C) synchronous impedance

(D) efficiency

Question: 9

An alternator operating at lower voltage, for the same power rating, will be

(A) larger in size

(B) less noisy

(C) costlier

(D) more efficient

Question: 10

The speed of a 4 pole 60 Hz synchronous machine will be

(A) 1500 r.p.m.

(B) 1800 r.p.m.

(C) 2400 r.p.m.

(D) 3000 r.p.m.