why designer use kva rating instead of kw in transformer
rating???????????????
Answer Posted / amolkarne
x'mers,UPS,DG etc are rated in KVA beacause at the time of
manufacturing manufacturer is unknown about the type of
load (inductive,capacitive or resistive)that perticular m\c
is going to suypply.so there is no question of pf to be
considerd to give it's rating in KW...........
KVA = KV X Amps -(1)
KW = KV X Amps X P.F. -(2)
it gets more clear by looking towards above formulae
Is This Answer Correct ? | 21 Yes | 6 No |
Post New Answer View All Answers
Can we put 3 layers of cable tray while installing tray
what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.
8. A DYNAMOMETER TYPE WATTMETER RESPONDS TO THE.......
How to Decide(calculate) Bush bar size for copper and aluminiam ?
what is the safety points of vaccum circuit breaker.
What are the main parts of central chiller plant? Explain the function of each stage.
What is the importance of earthing?
explain the types of drives
What is precision of a measurement?
Is it possible to connect a safety device in to parallel?
At what speed an electric car can run with 2 HP motor of weighing 400 kg?
Sir, I have applied for the of Jr.engineer(Electrical & Electronics) & ASST. LOCO PILOT at ALL RRB BOARDS. please send me all RRB Boards solved papers in the year of 2001 tO till date. i requested send me the papers to my id as soon as possible (jet_0991@yahoo.com). (This is very urgent) Thank You,
Why have to use copper cable for local isolator to motor ?
What is the disadvantage in proportional controller?
700KW 6.6KV slip ring induction motor to use VFD to control the speed