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.Management Sciences
A. it limits the speed of the motor
B. it limits the starting current to a safe value
C. it starts the motor
D. none of the above
Related Mcqs:
- In D.C. motor which of the following can sustain the maximum temperature rise?
- A. Slip rings B. Commutator C. Field winding D. Armature winding...
- In case of conductively compensated D.C. series motors, the compensating winding is provided______________?
- A. as separately wound unit B. in parallel with armature winding C. in series with armature winding D. in parallel with field winding...
- Which of the following motors one will choose to drive the rotary compressor ?
- A. D.C. shunt motor B. D.C. series motor C. Universal motor D. Synchronous motor...
- Which of the following loss in a D.C. generator varies significantly with the load current ?
- A. Field copper loss B. Windage loss C. Armature copper loss D. None of the above...
- A dc series motor should not be started on no load because it would___________?
- A. not develop starting torque B. fail to start without load C. run at dangerously high speed D. draw more current without producing sufficient torque...
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