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.Management Sciences
A. remain same
B. go down
C. improve
D. none of the above
Related Mcqs:
- The synchronous motor is not inherently self-starting because_______________?
- A. the force required to accelerate the rotor to the synchronous speed in an instant is absent B. the starting device to accelerate the rotor to near synchronous speed is absent C. a rotating magnetic field does not have enough poles D. the rotating magnetic field is produced by only 50 Hz frequency currents...
- Hunting in a synchronous motor cannot be due to___________?
- A. windage friction B. variable load C. variable frequency D. variable supply voltage...
- A synchronous motor can be used as a synchronous capacitor when it is____________?
- A. under-loaded B. over-loaded C. under-excited D. over-excited...
- If in a synchronous motor, driving a given mechanical load and drawing current at a leading power factor from constant voltage supply its field excitation is increased, its power factor
- A. will become more B. will become less C. will remain unchanged D. none of the above....
- In a synchronous motor, the breakdown torque is__________?
- A. directly proportional to the square of the applied voltage B. directly proportional to applied voltage C. inversely proportional to applied voltage D. none of the above...
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