Which of the following involved the consideration in the selection of the type of electric drive for a particular application depends on
A. Speed control range and its nature
B. Starting torque
C. Environmental conditions
D. All of the above
E. None of the above
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Answer: D
Which of the following is preferred for automatic drives?
A. Synchronous motors
B. Squirrel cage induction motor
C. Ward Leonard controlled dc motors
D. Any of the above
E. None of the above
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Answer: C
Which type of drive can be used for hoisting machinery
A. AC slip ring motor
B. Ward Leonard controlled DC shunt motor
C. DC compound motor
D. Any of the above
E. None of the above
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Answer: D
The motor normally used for crane travel is
A. AC slip ring motor
B. Ward Leonard controlled DC shunt motor
C. Synchronous motor
D. DC differentially compound motor
E. None of the above
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Answer: A
When smooth and precise speed control over a wide range is desired, the motor preferred is
A. Synchronous motor
B. Squirrel cage induction motor
C. Wound rotor induction motor
D. Dc motor
E. None of the above
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Answer: D
When quick speed reversal is a consideration, the motor preferred is
A. Synchronous motor
B. Squirrel cage induction motor
C. Wound rotor induction motor
D. Dc motor
E. None of the above
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Answer: D