What happens if excitation of alternator is changed keeping speed of prime mover constant?

What happens if excitation of alternator is changed keeping speed of prime mover constant?
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1 Answer

Answer :

The emf induced will be changed and hence terminal voltage will also change. The terminal voltage will increase with increase in excitation and vise versa.
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What happens if speed of prime mover is changed keeping excitation of alternator constant?

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In the illustrated electronic governor, the circuit card connected to the potential and current transformers is for ________. EL-0046 A. increasing the signal strength to the governor to maintain constant engine speed with increased load B. send a kilowatt signal to the metering circuit C. shutting down the prime mover in the event of reverse power to protect from motorization D. conditioning the load through the use of a magnetic amplifier current transformer

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If air gap readings for an electical generating machine have changed significantly from the last reading, you should check _________. A. the bearings B. insulation readings and machine cleanliness C. the prime mover thrust bearing D. the field coil bolts for the proper torque values

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RC time constant characteristics, as shown in the illustration, are important in _____________. EL-0086 A. bridge rectifiers for alternator excitation B. timing and pulse shaping circuits C. transistor power amplifier biasing D. motor controller overload protection

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List the factors that affect the load sharing in parallel operating generators?

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Last Answer : It is very accurate as it doesnot require personal judgement

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Last Answer : Synchroscope is an instrument, which shows the phase relationship of emf of the incoming alternator. It also indicates whether the incoming alternator is running slow or fast.

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Description : What is synchronizing?

Last Answer : The operation of connecting an alternator in parallel with another alternator or with common bus bars is known as synchronizing.

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What is meant by infinite bus-bars?

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