WHY THE RATINGS OF TRASNFORMER IS IN KVA?
Answers were Sorted based on User's Feedback
Answer / jeeten jogi
transformer have 2 type of loses core n copper.core depend
on voltage n copper on current so thats y rating in kva.
| Is This Answer Correct ? | 19 Yes | 3 No |
Answer / santhosh a c
There are two types of losses in transformers . core losses
depends on voltage and copper losses depends on current and
one thing is power factor is independent thats y
transformer are rated in KVA not in KW
| Is This Answer Correct ? | 17 Yes | 1 No |
Answer / naveen chauhan
T/F have two types losss.
1.core loss - it depends on voltage & other is
2.copper loss - it depends on current
& P=V I COS(fiee) (mean depends on volt ampere). so
transformers ratings are in KVA.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / sibghatullah
since transformer and generator are acting as source due to
which the load connected to them can be inductive (lagging pf)
or capacitive(leading pf) or resistive.WE don't know about
the load before hand. Real power (KW) changes due to pf
change in (P= S*pf) ,but the total apparent
power KVA remain constant. so transformer and generator
power changes that's they are rated in KVA but motor' pf is
specified and acting as a load ,that's why motor rating is
always specified in KW. because its KW never changes!!
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / chandrakar.amita
BECAUSE POWER FACTOR OF THE LOAD IS UNKNOWN.
AS WE KNOW
P=VI*PF
IS POWER FACTOR IS UNKNOWN THAN
P= V*I SO THE RATING WILL BE KVA
| Is This Answer Correct ? | 8 Yes | 10 No |
why the earth pin in a 3-pin socket is longer and thickest?
I have two power supply.a)govt. power b)Captive power.3 phase load connected inside factory.when source change govt. source to captive some motor rotate reverse. Is phase sequence changes when if off & on?If I off generator & on it again is it possible to get changed phase sequence??
Why heat produce in AC machine higher than DC machine?
One 15kw motor Why we used star delta feeder?why not used DOL please explain in details
3 Answers BMM Ispat, GSK, Pitti Laminations,
working method of railway electricl loco in single wire 25000 volt
differentiate PLC,DCS,SCADA?
What is the need for checking knee point voltage for CT's?
Can anyone explain about Control and power circuits of star delta starter & DOL starter ? How it works? please!
how to compute kvar in substation feeder to improve power factor and sending voltage
Dear Respected sir how to test ABB REX521 protection relay by relay tester.
When color of silica gel will gets change from blue to pink from Top to bottom?
what is the difference between grounding and earthing......how can we differentiate each other.....
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)