Industrial Drives Multiple Choice Questions and Answers - 2

Question: 6

In _______ the speed can be varied by changing the position of brushes.

(A) repulsion motor

(B) induction motor

(C) schrage motor

(D) slip ring motor

Question: 7

Which of the following motors is preferred for boom hoist of a travelling crane?

(A) Single phase motor

(B) Synchronous motor

(C) Ward-Leonard controlled D.C. shunt motor

(D) A.C. slip ring motor

Question: 8

For blowers which of the following motors is preferred?

(A) Wound rotor induction motor

(B) Squirrel cage induction motor

(C) D.C. shunt motor

(D) D.C. series motor

Question: 9

______ motor is a constant speed motor.

(A) universal motor

(B) induction motor

(C) schrage motor

(D) synchronous motor

Question: 10

Which of the following motors is used for elevators?

(A) synchronous motor

(B) induction motor

(C) capacitor start single phase motor

(D) any of the above