1000+ Alternator MCQ Questions and Answers Pdf - 1

Question: 1

Turbo alternators are generally used to run at

(A) 1000 r.p.m.

(B) 1500 r.p.m.

(C) 3000 r.p.m.

(D) 5000 r.p.m.

Ans: C

3000 r.p.m.

Question: 2

Harmonic component of generated e.m.f. will be more in

(A) long pitch coil

(B) short pitch coil

(C) full pitch coil

(D) none of above coils

Ans: C

full pitch coil

Question: 3

Which of the following is a prime mover?

(A) electric heater

(B) solar energy

(C) steam turbine

(D) none of the above

Ans: C

steam turbine

Question: 4

When the speed of an alternator increases

(A) the frequency changes

(B) the frequency remains same

(C) the frequency increases

(D) the frequency decrease

Ans: C

the frequency increases

Question: 5

Generated e.m.f. for same field current and double speed will be

(A) double

(B) same

(C) less than double

(D) more than double

Ans: A


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