SYNCHRONOUS MOTOR-2
Synchronous Motor Knowledge Quiz
Test your knowledge about synchronous motors with this engaging quiz designed for students and professionals alike. Dive into various aspects of synchronous motors, including their fun
Challenge yourself with questions about:
- V-curves and power factors
- Operating losses and efficiencies
- Motor speed and armature currents
11. For V-curves for a synchronous motor the graph is drawn between ______________
Field current and armature current
Terminal voltage and load factor
power factor and field current
Armature current and power factor
12. In a synchronous motor which loss varies with load?
Windage loss
Bearing friction loss
Copper loss
Core loss
13. The oscillations in a synchronous motor can be damped out by ____________
Maintaining constant excitation
Running the motor on leading power factors
Providing damper bars in the rotor pole faces
Oscillations cannot be damped
14. When the field of a synchronous motor is under-excited, the power factor will be _______
Leading
Lagging
Unity
Zero
15. The percentage slip in case of a synchronous motor is _____________
1%
100%
0.5%
Zero
16. Synchronous motors are ____________
Not self-starting
Self-starting
Essentially self-starting
None of the above
17. A synchronous motor working at leading power factor can be used as ___________
Voltage booster
Phase advancer
Noise generator
Mechanical synchronizer
18. An over-excited synchronous motor is used for __________
Filctuating loads
Variable speed loads
low torque loads
Power factor corrections
19. The speed of the synchronous motor ___________
Increases with increase in load
Decreases as load increases
Varies with power factor
Always remains constant
20. The armature current of the synchronous motor has higher values for __________
High excitation only
Low excitation only
Both a & b
None of the above
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