What is meant by Active and reactive power?
Answer Posted / karthikeyan
Active Power is the one which is utilised by the inductive
loads to produce useful torque and work. Reactive power is
the one which is being used to magnetise the Inductive load
and once its job over it will return back to the source.In
this occasion only harmonics are produced with fundamental
sine waves. and there is no useful work done by this
magnetising current so to make use of this wastefull
current we introduce the static capacitors near the
Inductive loads to produce leading reactive power.To
compansate this reactive power one should supply the active
power to equal amount of reactive power to the system.
Is This Answer Correct ? | 12 Yes | 4 No |
Post New Answer View All Answers
Explain Creepage Distance of Insulator
take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????
Define relative stability.
list the advantages of RCCB over other circuit breakers?
What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side
why we are using Load factor?
How one may guess the direction from which the distribution line is incoming if there is no pole plate on poles?
How to calulate Locked rotor amper(LRA) for compressor type motors?
what's the difference between abs/inc encoders. apart from the position remembrance what are all the other differences. and what's mean by grey code.
Is it required to lay GI wires along with GI/MS conduits from one point to another point though separate earthing cable is conncted from DB to Socket?
when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you
Why should we hire you over the others waiting to be interview?
How we calculate the size of ht cable for any transformer
fuel-air ratio in a petrol engine fitted with suction carburettor,operating with dirty air filter as compared to clean filter will be
Could u pls tell me the NPCIL electrical engineering interview questions for Executive trainee, and also guide me how to face the interview.