why DG,Transformer,UPS capacity will be tell in KVA but not
in KW?
Answers were Sorted based on User's Feedback
Answer / sujith
The active power in KW is= VICos(angle B/w V&I).
The angle is dependent on the load connected and hence the
active power varies. So KVA only can be mentioned for the
above mentioned supply sources.
Is This Answer Correct ? | 12 Yes | 3 No |
Copper loss depending upon the voltage .core loss depeon
the current. both the lossse are meassure in voltage and
current thats why we are mensione in KVA .
Is This Answer Correct ? | 7 Yes | 3 No |
Answer / srikanth
In DG the power factor is always unity that means cos=1
so the value of power is P=VI
P=VI IS FORMULA FOR KVA
SO DG IS IN KVA BUT NOT IN KW
Is This Answer Correct ? | 3 Yes | 5 No |
Answer / puneet kapil
First of all get clerar with the term KVA and KW
KW is the real power or active power
that means the amount of power that is available to do real work.
And KVA is the apparent power,that means
only a part ogf apparent power is available to do real work
rest or remainder is simply the excess current.
Now the question arises why to mention KVA the apparent power,
if only we can use a part of it...
Answer..... the rating of electrical appliances is dependent om the amount of current they can sustain,but KW does not give the actual amount of current that electrical equipment
can carry which is given by KVA...
I hope its clear now :)
Is This Answer Correct ? | 0 Yes | 4 No |
can d.c.transformer exist? if yes then what its max. rating?
what is meant by armature reaction?
Why is a plain induction motor unsuitable for wide speed control?
why any surge protection is not provided to UHV ac transmission line (765kv) ?
1 Answers NK Power Systems, Reliance,
pls someone send me sample question papers along with the key.thanks in advance
how many BUSBAR is in electrical system?
if two transformers are parallel & both have fault short ckt. impedance of 50KA in each case will it increase or decrease show example?
Befor synchronissation of Generator what test to be carried out.pl.specify with reason.
why do we generate only 3ph ac?is it possible to generate 4ph,5ph,....?
6 Answers Accenture, Bhel, Reliance,
respected sir, sir recentely i have applied for chennai and tiruvananthapur section enggineer and juniour engg in electrical dept. but still i donot get how i have to syart my preparation and also t the same time i donot know exactly what they r going to give in the examinations i mean which sections they r going to give i donot know exactly, can u prefer whichh books i have to follow and model papers or both boards
How to calculate the efficiency of Turbo Generator(Alternator) in general....?
What is the slip speed?