if voltage is not builed up in small generator what will be the reason?

Categories >> Engineering >> Electrical Engineering
Suggest New Category

if voltage is not builed up in small generator what will be
the reason?

Question Posted / anil_636

7 Answers
11243 Views
century, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

if voltage is not builed up in small generator what will be the reason?..

Answer / sachin_pawaskar2001

loss of excitation

Is This Answer Correct ?

9 Yes

0 No

if voltage is not builed up in small generator what will be the reason?..

Answer / nimish

there are so many reasons there may not be a residual
magnetism in d.c. generator then if critical resistance is
more than field resistance

Is This Answer Correct ?

9 Yes

1 No

if voltage is not builed up in small generator what will be the reason?..

Answer / j.kesavan

some times diodes failur in exciters,thats why voltage not
built in gen set

Is This Answer Correct ?

5 Yes

0 No

if voltage is not builed up in small generator what will be the reason?..

Answer / swayanjit

if voltage build up is not possible then there may be open
circuit in the field or armature, may be due to dirty
commutator, may be the speed less than the critical spped,
may be the field resistance greater than the critical
resistance.

Is This Answer Correct ?

4 Yes

0 No

if voltage is not builed up in small generator what will be the reason?..

Answer / shakir

there are so many reasons:
1.the exciter might have problem
2.the ac produced in exciter is converted into dc before
supplying it to the rotor.the diodes used for this purpose
might have problem.
3.when u start the generator there should be a residual
magnetism to induse the voltage.if u will not use the
generator for long time, it will loose that residual
magnetism.for that purpose u have to give flash over
voltage.
4. the exciter winding might be grounded.
5. the input (D.C.from voltage regulator)voltage to the
exciter is not enough to create flux in the exciter.
6.faulty stator winding

Is This Answer Correct ?

3 Yes

0 No

if voltage is not builed up in small generator what will be the reason?..

Answer / har

avr damaged

Is This Answer Correct ?

4 Yes

2 No

if voltage is not builed up in small generator what will be the reason?..

Answer / sirisha

it is because the polarities of the field windings are
reversed.