Which motor should not be started on no-load ?
A. Cumulatively compounded motor
B. Differentially compounded motor
C. Shunt motor
D. Series motor
D.C Motors
D.C Motors Mcqs
Which D.C. motor has got maximum self loading property ?
A. Shunt motor
B. Cumulatively compounded ‘motor
C. Differentially compounded motor
D. Series motor
A three point starter is considered suitable for ____ ?
A. Shunt, compound and series motors
B. Shunt motors
C. Shunt as well as compound motors
D. All D.C. motors
Currently, D.C. motors are utilized in :
A. electric traction
B. machine shops
C. pumping sets
D. air compressors
The Ward-Leonard speed control system is not recommended for :
A. wide speed range
B. constant speed operation
C. very low speeds
D. frequent motor reversals
What does the D.C. motor’s armature voltage control provide ?
A. constant torque drive
B. constant voltage drive
C. constant current drive
D. None of them
What is the structure of the D.C. series machine base ?
A. few number of turns of thin wire
B. few number of turns of thick wire
C. many number of turns of thick wire
D. many number of turns of thin wire
When working in a highly energetic atmosphere, which of the following motors is preferred ?
A. Battery operated motor
B. Air motor
C. Series motor
D. Shunt motor
Which motor should be used for centrifugal pumps?
A. Shunt motor
B. Series motor
C. Either of the above
D. None of them
Why are D.C. shunt motors used as drivers ?
A. machine tools
B. hoists
C. trains
D. cranes