what is reactive power
is it good or bad for a system
- 5 Answers
- 14849 Views
- I also Faced
- E-Mail Answers
Answer Posted / santhosh
Power is classified in to three types: True power(KW),
Active Power(KVA) and Reactive Power(KVAR).
KW = KVA*Cos pi
KVAR = KVA*Sin pi.
Generally we consider Cos pi as 0.9.
Hence from above formula we can see that as KVAR increase
Cos pi decrease. That is as reactive power increases the
the power factor will decrease and which ultimately effects
the total electrical system.
Therefore to neutralse the reactive power we use capacitors
so that the power factor is maintained at 0.9.
| Is This Answer Correct ? | 14 Yes | 6 No |
Post New Answer View All Answers
if negative of DC supply used and positive is grounded through EGB, and if ELCB used in the system then is it sense the positive volatge and get tripped is it possible?
To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?
What is the Current equation in series RLC circuits.
Why we use mho Relay in long transmission line?
WTA used cb?
What are the essential characteristics of signal flow graphs?
what is arc flash and what are the hazards involved
What are the different towers used in 132kv transmission line? what are the differences between the P,R,S towers used in 132KV and detailed explanation
how many types control panel of a 132/33 kv substation
why asa method ZPF method is more accurate than ASA method?
Operation carried out in thermal power stations?
Why back emf used for a dc motor? Highlight its significance.
I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....
a starter used for squirrel cage induction motor?
what is the difference between earth leakage and earth fault?
