1000+ Industrial Drives MCQ Questions and Answers Pdf - 2

Question: 6

For a motor generator set which of the following motors will be preferred?

(A) squirrel cage induction motor

(B) pole changing induction motor

(C) synchronous motor

(D) slip ring induction motor

Ans: C

synchronous motor

Question: 7

Which of the following machines has heavy fluctuation of load?

(A) lathe

(B) planer

(C) punching machine

(D) printing machine

Ans: C

punching machine

Question: 8

Which of the following motors is preferred when quick speed reversal is the main consideration?

(A) synchronous motor

(B) D.C. motor

(C) wound rotor induction motor

(D) squirrel cage induction motor

Ans: B

D.C. motor

Question: 9

For a D.C. shunt motor which of the following is incorrect?

(A) toque is zero for zero armature current

(B) torque armature current is a straight line

(C) torque varies as armature current

(D) unsuitable for heavy duty starting

Ans: D

unsuitable for heavy duty starting

Question: 10

The cost of an induction motor will increase as

(A) horsepower rating and operating speed decreases

(B) horsepower rating and operating speed increases

(C) horsepower rating decreases but r.p.m. increases

(D) horsepower rating increases but r.p.m. decreases

Ans: D

horsepower rating increases but r.p.m. decreases

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