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SYNCHRONOUS MOTOR-2

A detailed diagram of a synchronous motor showing its components, V-curves, and operational characteristics with an educational theme.

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 functionality, performance, and operational characteristics.

Challenge yourself with questions about:

V-curves and power factors
Operating losses and efficiencies
Motor speed and armature currents

10 Questions2 MinutesCreated by ExploringEngine42

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 _____________

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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