Electrical Engineer Test Part-2

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20 Questions - Developed by: - Developed on: - 2.777 taken

Electrical Engineer Test Part 2 (V-1.7) (Question-21-40)

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    21. Voltage regulation of an alternator may be ________ if connected to capacitive load
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    22. Alternator having negative voltage regulation when load has
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    23. At over excitation for alternator, power factor will be

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    24. If an alternator is over excited:
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    25. An alternator is an electromagnetic generator:
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    26. The power factor of an alternator depends on

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    27. Zero power factor method of an alternator is used to find its
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    28. If the input to the prime mover of an alternator is kept constant but the excitation is changed, then the
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    29. How to change the power factor of a generator
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    30. Breaking for induction motor

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    31. What will be the effect in system, if we over-excite a synchronous generator?
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    32. What is spinning reserve?
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    33. Spinning reserve means
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    34. which dc generator has poor voltage regulation
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    35. If the induction motor speed at no-load is 745 RPM, what is the speed of the motor:
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    36. If an induction motor at 50 Hz, has a speed at no-load of 745 RPM, what will be the synchronous speed of the motor:

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    37. A 4pole Alternator runs in 750 rpm, what is the frequency?
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    38. Synchronous speed for motor 3000 RPM, 50Hz, calculate number of poles.
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    39. Synchronous speed for motor 8000 RPM, rotor speed 7500 RPM calculate slip.
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    40. A synchronous generator running at a speed of 1200 rpm and its frequency is 100 HZ, then what will be quantity of poles used in that generator?

Comments (1)

autorenew

260 days ago
are your all answers are correct.. are you sure about it