Squirrel Cage & Slip Ring Rotor in 3 phase induction motor - MCQs with Answers

Squirrel Cage & Slip Ring Rotor in 3 phase induction motor - MCQs with Answers

Q1. In squirrel cage rotor, bars are usually brazed to the end rings. The end rings are used to

a. Prevent rotor leakage current
b. Give reduced starting torque
c. Provide good mechanical strength
d. All of these

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Q2. Slots of squirrel cage rotor are generally skewed to

a. reduce magnetic hum
b. reduce magnetic locking
c. make motor operation smooth
d. all of these
e. none of these

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Q3. The wound rotor induction motor gives

a. high stating torque
b. moderate starting torque
c. reduced starting torque
d. all of these

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Q4. The slip ring or wound rotor induction motor finds it applications in

a. lifts, cranes
b. lathes
c. drilling machines
d. printing machines

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Q5. For the speed control of squirrel cage induction motor, the most suitable method is

a. Rotor resistance control
b. Rotor reactance control
c. Stator resistance control
d. Stator reactance control

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