If excitation will increase, then what will be the effect on power factor? Wil

If excitation will increase, then what will be the effect
on power factor? Will it decrease or increase?

Question Posted / pradeep123

4 Answers
23753 Views
Prozone, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

If excitation will increase, then what will be the effect on power factor? Will it decrease or inc..

it will depend upon a machine.

alternator:
excitation current will increase means power factor will decrease bcoz E is increased & resultant E induced and load current phase angle is reduced so power factor reduced

synchronous motor
on over excitation it will increase a power factor.

Is This Answer Correct ?

28 Yes

2 No

If excitation will increase, then what will be the effect on power factor? Will it decrease or inc..

Answer / gulshan goyal

it depends on the machine.If it is a motor and if we
increase excutation power will shift from lagging to
leading.as we increse the excitation angle will first
decrease as in lagging side than angle will increase in
leading side and hence the power factor will initially may
be .8 lagging than .9L,.95L,1 than .95 leading ,.9Ld,.8Ld

Is This Answer Correct ?

7 Yes

5 No

If excitation will increase, then what will be the effect on power factor? Will it decrease or inc..

Answer / vishal

if exitation increase then power factor decrease, and if
exitation decrease then pf increace

Is This Answer Correct ?

7 Yes

8 No

If excitation will increase, then what will be the effect on power factor? Will it decrease or inc..

Answer / j.ramkumar

the alternator load increase the excitation will increase
same time pf decrease we use our avr auto mode it will
maintain automatically

Is This Answer Correct ?

4 Yes

9 No

Post New Answer

More Electrical Engineering Interview Questions

What is the complete procedure of erection of electrical panel in industry

0 Answers BTM, Imerys,

what is busbar and its function/

2 Answers

In hydro plant,generally we install vertical hydro generators..why dont we recommend horizontal one??

1 Answers Alstom,

ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

0 Answers Mukand,

what is the means of dedicate earthing?

2 Answers

What is fault level?How it is calculated and how it is Expressed?

2 Answers

how to calculate multiplying factor with ct ratio 400/5

1 Answers KBPL,

what is the effect come when i changed the alternator exciter field winding DC palority(+ve & -ve)which is coming from AVR.

1 Answers Wartsila,

what will happen if we use cylindrical conductor instead of flat cu conductor in transformer

2 Answers Crompton Greaves,

pls define kvarh

2 Answers

what is the mechanism of operation of brushless dc motor why is it more wexpensive then ordinary permanent magnet motors

0 Answers Lanco,

Why single core cable required bonding at double end.

1 Answers

For more Electrical Engineering Interview Questions Click Here