ALTERNATOR 2
Alternator Mastery Quiz
Test your knowledge on alternators with our comprehensive quiz! This quiz covers various topics related to three-phase alternators, armature reaction, synchronous machines, and more. Perfect for students and professionals alike, you can enhance your understanding and challenge your expertise.
Key Features:
- Multiple choice questions
- Covers essential electrical engineering concepts
- Ideal for learning and revision
11. When a three-phase alternator supplies capacitive load, armature reaction flux will be ___________
Opposing the main magnetic field
Helping the main magnetic field
Either (a) or (b)
None of the above
12. In case of a uniformly distributed winding, the value of distribution factor is _________
0.65
0.76
0.85
0.995
13. Which of the following is a prime mover?
Steam turbine
Solar energy
Electric heater
None of the above
14. In a large generator, dampers ___________
Reduce frequency fluctuations
Reduce voltage fluctuations
Increase stability
None of the above
15. Fleming’s right hand rule may be applied to an electric generator to find out direction of ___________
Magnetic field
Induced emf
Rotor rotation
None of the above
16. In an alterenator, the armature reaction will be completely magnetizing in case the load power factor is ___________
Zero lagging
Zero leading
0.866
Unity
17. The dark and bright lamp method is used for ______________
Transfer of load
Synchronizing
Balancing of load
Phase sequence
18. In a synchronous machine, all of the following losses are fixed except __________
Core loss
Copper loss
Bearing friction loss
Windage loss
19. When the speed of an alternator increases, ___________
The frequency decreases
The frequency increases
The frequency remains constant
The frequency does not change
20. In alternators the standard practice, now a days is to have ___________
Rotating field
Rotating armature
Either of the above
None of the above
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