Interested to Buy Any Domain ? << Click Here >> for more details...
Why DC excitation is used for alternators? Why cant it be AC?
- 35 Answers
- 79260 Views
- ABB, Ace Info, Alstom, Shalivahana Power, I also Faced
- E-Mail Answers
Answer Posted / rvg.msceb
The basic requirement of an alternator is considered to be
as a sine wave generator. for getting pure sine wave, the
excitation to be of DC with low ripple factor.
in commercial generators, pure sine wave cannot be achived,
because of the core property of the material.
The excitation can of AC too. If we provide ac excitation,
the armature reaction will be more, and there by more core
loss, leads to heating up of core materials.The harmonics
disturbance also having consider effect in the power loss.
| Is This Answer Correct ? | 60 Yes | 12 No |
Post New Answer View All Answers
What is transister define the transister ammiter ,base, colector.
What is the meaning of C1, C61, C91 cable
what will happen if there is a voltage leakage or current leakage in an electrical train
How work of capacitor in dc supply...???
how a flip flop can be used as a latch?
What are the causes for the failures of sandwich type (Al) busducts?
What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines
The electromagnetic torque developed is proportional to what in a D.C series motor?
DEFINE BREAKING CAPACITY OF BUSBAR & HOW IT IS CALCULATED?
what curve and rateing would you use for a three phase 0.75kw motor?
How to choose the vector group for the step up and step down transformers??? Tell me the which vector group is suitable for step up and step down transformers and whats the reason to choose and whats the benefits???
what will happens if one phase is missing for 33/11kv power transfomer and why?
what is meant by poly phase induction motor ? how its operating by single phase or three phase?
what is your aim
who many types of fire explane with exmple
