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Industrial Drives

For which of the following applications motor has to start with high acceleration ?

August 12, 2021December 24, 2018 by admin
For which of the following applications motor has to start with high acceleration ?

A. Oil expeller
B. Floor mill
C. Lifts and hoists
D. Centrifugal pump

Categories Electrical Engineering Mcqs, Industrial Drives

Which of the following happens when star-delta starter is used ?

August 12, 2021December 24, 2018 by admin
Which of the following happens when star-delta starter is used ?

A. Starting voltage is reduced
B. Starting current is reduced
C. Both A. and B.
D. None of the above

Categories Electrical Engineering Mcqs, Industrial Drives

Which of the following motors is preferred when smooth and precise speed control over a wide range is desired ?

August 12, 2021December 24, 2018 by admin
Which of the following motors is preferred when smooth and precise speed control over a wide range is desired ?

A. D.C. motor
B. Squirrel cage induction motor
C. Wound rotor induction motor
D. Synchronous motor

Categories Electrical Engineering Mcqs, Industrial Drives

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

August 12, 2021December 24, 2018 by admin
Which of the following motors is preferred for boom hoist of a travelling crane ?

A. Single phase motor
B. Synchronous motor
C. A.C. slip ring motor
D. Ward-Leonard controlled D.C. shunt motor

Categories Electrical Engineering Mcqs, Industrial Drives

The capacity of a crane is expressed in terms of_______________?

August 12, 2021December 24, 2018 by admin
The capacity of a crane is expressed in terms of_______________?

A. type of drive
B. span
C. tonnes
D. any of the above

Categories Electrical Engineering Mcqs, Industrial Drives

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

August 12, 2021December 24, 2018 by admin
Which of the following motors is preferred when quick speed reversal is the main consideration ?

A. Squirrel cage induction motor
B. Wound rotor induction motor
E. Synchronous motor
D. D.C. motor

Categories Electrical Engineering Mcqs, Industrial Drives

A pony motor is used for the starting which of the following motors ?

August 12, 2021December 24, 2018 by admin
A pony motor is used for the starting which of the following motors ?

A. Squirel cage induction motor
B. Schrage motor
C. Synchronous motor
D. None of the above

Categories Electrical Engineering Mcqs, Industrial Drives

Besides a constant speed a synchronous rotor possesses which of the following advantages ?

August 12, 2021December 24, 2018 by admin
Besides a constant speed a synchronous rotor possesses which of the following advantages ?

A. Lower cost
B. Better efficiency
C. High power factor
D. All of the above

Categories Electrical Engineering Mcqs, Industrial Drives

For crane travel which of the following motors is normally used ?

August 12, 2021December 24, 2018 by admin
For crane travel which of the following motors is normally used ?

A. Synchronous motor
B. D.C. differentially compound motor
C. Ward-Leonard controlled D.C. shunt motor
D. AC. slip ring motor

Categories Electrical Engineering Mcqs, Industrial Drives

The characteristics of drive for crane hoisting and lowering are which of the following ?

August 12, 2021December 24, 2018 by admin
The characteristics of drive for crane hoisting and lowering are which of the following ?

A. Precise control
B. Smooth movement
C. Fast speed control
D. All of the above

Categories Electrical Engineering Mcqs, Industrial Drives
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