what will be the effect if we increase the excitation of a alternator??

what will be the effect if we increase the excitation of a
alternator??

Question Posted / mkrishno

3 Answers
6982 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what will be the effect if we increase the excitation of a alternator??..

Presuminng that the field excitation is increased,incresed excitation produces more flux and hence more current which the winding may not handle resulting in the production of exessive heat.As a result the the alternator may burn

Is This Answer Correct ?

4 Yes

0 No

what will be the effect if we increase the excitation of a alternator??..

Answer / jakeer

The output voltage will be high & due to this over voltage
relay will trip the Alternator.

Is This Answer Correct ?

1 Yes

0 No

what will be the effect if we increase the excitation of a alternator??..

Answer / raul

If the excitation of an alternator is increased, then the
excitation voltage will increase, more flux in the air gap,
more rotor heating. But the excitation increase is governed
by the ROTOR HEATING LIMIT as per the generator capability
curve which over-rides the STATOR HEATING LIMIT. Above the
RHL, the automatic voltage regulator (AVR) takes over
control and starts reducing the excitation by Rotor current
limiter which acts in conjunction with the AVR.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

why do we use 25kv supply for traction purpose?

0 Answers Bhel,

WHY NOT CONSIDER PROTONS IN ELECTRICITY LIKE ELECTRIC CURRENT?

1 Answers

How to calculate Maximum Demand from Energy meter Reading.

1 Answers Etisalat,

Why HT motor of 3.3 kw or 6.6 KV, one side foundation ( mostly non drive end ) keep insulated from ground ?

2 Answers

what is arc flash and what are the hazards involved

0 Answers Reliance,

high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...

0 Answers

Why nutral wir used thinner than phase wire

3 Answers

In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc

0 Answers

I have 3KVA Libert GTX2 UPS. I need to calculate the back up time with some load. How to calculate the Back time. I need the expert guide

1 Answers

What is emperical relation.Name few of them which are used in electriacl engineering?

1 Answers

How does a digital electronic meter work??????

0 Answers

For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?

0 Answers Electrical Tech, UPSE,

For more Electrical Engineering Interview Questions Click Here