With the increase in temperature, the speed of DC shunt motor____________?
With the increase in temperature, the speed of DC shunt motor____________?
A. decreases.
B. increases
C. remain same
D. none of the above
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These days D.C. motors are widely used in____________?
These days D.C. motors are widely used in____________?
A. pumg sets
B. air compressors
C. electric traction
D. machine shopsIn D.C. motor which of the following can sustain the maximum temperature rise?
In D.C. motor which of the following can sustain the maximum temperature rise?
A. Slip rings
B. Commutator
C. Field winding
D. Armature windingDifferentially compound D.C. motors can find applications requiring___________?
Differentially compound D.C. motors can find applications requiring___________?
A. high starting torque
B. low starting torque
C. variable speed
D. frequent on-off cyclesBy looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?
By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?
A. Frame
B. Shaft
C. Commutator
D. StatorThe total losses in a well designed D.C. generator of 10 kW will be nearly______________?
The total losses in a well designed D.C. generator of 10 kW will be nearly______________?
A. 100 W
B. 500 W
C. 1000 W
D. 1500 WD.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the________________?
D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the________________?
A. series motor
B. shunt motor
C. compound motor
D. any of the above