# Electrical Engineer Test Part-2

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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?