wat is the advantage of increse in frequency?how the
powersupply range decreses as the frequency increses?like
in america,it uses 110 ac and 60 hz?
Answers were Sorted based on User's Feedback
Answer / krishna sai
with the increase in the frequency by keeping the kva rating of the machine constant then the size of the machine can be reduced.
on the other hand during the design stage if the frequency is increased then the KVA rating of the machine will be increased as KVA proportional to EI where E(induced voltage) is proportional to f. Power supply voltage range must be decreased along with the increase in frequency so that the machine will be safe without getting into saturation
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / kj
One advantage is that as the frequency is increased less
iron is used in a generator or motor. Between 50 and 60 Hz
there is only a slight difference.
Where there is a major difference is when the frequency is
increased to 400Hz. This significantly reduces the weight
which is critical in aircraft where this frequency is used.
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / arun
When frequency increases,power factor will also increase.
| Is This Answer Correct ? | 0 Yes | 5 No |
Do I need a special Transformer to put 240 VAC 3 phase into it and and get 480 VAC 3 phase out of it to run a machine? Or, do I just use an ordinary step down transformer and step up the voltage? Thanks
how ti maintain the power factor in power generation
what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks
ohms law is applicable for dc or ac current or for both??? explain it berifly??
what is a difference b/w earthing & neutral?
What happens if the series current double?
What is stepper motor?
how to create new innovation what are the supporting sources in the electrical field for Electrical engineers.....?
WHAT MEANT BY SEVICE FOCTOR?
what is the size of ht cable of 33kv ht line and transformers ratings are 2.5mva and 5.5mva.please send formula also.
How do you convert the lt amps on a transformer to the ht amps?
Can we convert off line transformer to on line transformer
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)