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Electrical Machines
Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. What is the operating frequency, if the load is 600 MW?
48 Hz
50 Hz
45 HZ
48.5 Hz
48 Hz
50 Hz
45 HZ
48.5 Hz
Answer
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Related Question
Electrical Machines
Capacitor fitted with ceiling / table fans is of the value of
1 - 2 µF.
2 - 3 µF.
0.1 µF.
5 - 10 F.
1 - 2 µF.
2 - 3 µF.
0.1 µF.
5 - 10 F.
Answer
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Electrical Machines
A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be
1.4 mWb.
3.5 mWb.
1.2 mWb.
2.7 mWb.
1.4 mWb.
3.5 mWb.
1.2 mWb.
2.7 mWb.
Answer
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Electrical Machines
The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is
16.67 Hz.
60 Hz.
50 Hz.
25 Hz.
16.67 Hz.
60 Hz.
50 Hz.
25 Hz.
Answer
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Electrical Machines
Which of the following methods of speed control is not affected through stator side?
Change of rotor resistance.
Change of supply frequency.
Change of number of pole.
Change of supply voltage.
Change of rotor resistance.
Change of supply frequency.
Change of number of pole.
Change of supply voltage.
Answer
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Electrical Machines
Which of the following motor is expensive for same Kw output rates?
Induction motor.
AC single phase motor.
DC Shunt Motor
Synchronous motor.
Induction motor.
AC single phase motor.
DC Shunt Motor
Synchronous motor.
Answer
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