why do you give the dc supply to field of alternator

Question Posted / chinna_203

3 Answers
4383 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

why do you give the dc supply to field of alternator..

The rotor of alternator consists of a coil of wire wrapped
around an iron core. Current through the wire coil -
called "field" current - produces a magnetic field around
the core. The strength of the field current determines the
strength of the magnetic field. The field current is D/C,
or direct current so that the current flows in one
direction only, and is supplied to the wire coil

Is This Answer Correct ?

2 Yes

1 No

why do you give the dc supply to field of alternator..

Answer / rps

because we need constant magnetic flux so that windings of armature can cut them & induce emf.

Is This Answer Correct ?

0 Yes

0 No

why do you give the dc supply to field of alternator..

Answer / k.prakashchandra

Field requires poles of alternative(N &S) fixed
polarities,which is possible only with DC

Is This Answer Correct ?

1 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

Advantages of low voltage drive (control panel)

1 Answers ABB,

how braking & making capacity of circuit breaker are calculated?

0 Answers Bhel,

oil sample dielectric test gives the insulation rupture voltage at 26 kv. is this transformer safe to be operated . The working voltage is 11 kv

2 Answers

3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

0 Answers

how motor should be connected i.e star-delta or star-star or delta-delta ?

3 Answers GSE,

What are the consequences in using existing step up transformer (primary 6.6kv/175A, secondary 480v/2405A) for step down transformer to have a 6.6kv output?

1 Answers

Differentiate between power relay and reverse power relay?

2 Answers ABB, TVS,

What is AVR in Generators and How is it working.

4 Answers

what is acceptance test in electrical engineering.

0 Answers ABB,

what is servo motor & how does it work.

0 Answers

Does outdoor isolator loose connection cause short circuit current in that circuit? if yes then how ??

0 Answers

What are the role of each components in PID COntroller

1 Answers BARC,

For more Electrical Engineering Interview Questions Click Here