1000+ Alternator Multiple Choice Questions and Answers Pdf - 1

Question: 1

An alternator coupled to which prime mover will usually have the highest rotating speed?

(A) steam turbine

(B) francis turbine

(C) reciprocating diesel engine

(D) steam engine

Ans: A

steam turbine

Question: 2

The speed of a salient pole machine is nearly

(A) 500 r.p.m.

(B) 1000 r.p.m.

(C) 1500 r.p.m.

(D) 2500 r.p.m.

Ans: A

500 r.p.m.

Question: 3

Alternators are usually designed to generate

(A) definite frequencies

(B) variable frequencies

(C) definite power factor

(D) definite currents

Ans: A

definite frequencies

Question: 4

The dark and bright lamp method is used for

(A) phase sequence

(B) balancing of load

(C) synchronizing

(D) transfer of load

Ans: C


Question: 5

In an alternator, the stator frame serves

(A) as a return path for the flux

(B) to protect the whole machine

(C) to hold the armature stampings

(D) to verticate the armature

Ans: A

as a return path for the flux

Related Questions
Read More Engineering Topics