Answer / m.bhuvaneswari

transformer copper loss is directly propotional to
current&iron loss is directly propotional to voltage. so
transformer rating is in kva.

Answer / boopathi

we can't find the correct powerfactor , this is depn upon
the loads thats why we are calling KVA..

Answer / j.kesavan

copper loss depending upon on current, iron loss depending
upon voltage thats why tr in kva not in kw

Answer / ashiah

In trafo we dont know what types of load connected at a
time.i.e. inductive or rasistive but in motor load is same.

Answer / sunil shelake

Cappacity(rating) of Transformer is always in KVA.If you
see the fomula of calculation of KW,you will get the answer
of this question. KW = VxIxPF/100 Power Factor can be vary
as it depends upon connected load.

Answer / livereason

Actually In transformer we cannot determine actual value of
the power factor. Power factor depends upon the load.
therefore we say the transformer rating in KVA.

Answer / baskaran.r

the rating kva or va is given because both are limited to
the given value,whatever be the power factor. if the ratings
are given in KW, at low powerfactor people will subject the
transformer to a higher currents and damage the transformer
hence the ratings are given in kva

What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

0 Answers  

how calculate busbar size for rated amps, which formula use

2 Answers   Rites,

why DC is not generated instead of AC?

4 Answers  

flush point of transformer?

2 Answers  

Difference between DOL starter & star Delta Starter? And where the Dol starter used upto how much HP and whereas Star Delta vice versa?

3 Answers  

In a simple spur gear train, gears with 24, 48, 32, 72 and 96 teeth are in sequence. The gear with 24 teeth runs at 900 rpm. The speed in rpm of gear with 72 teeth is

1 Answers   Caterpillar,

An ISP is granted a block of addresses starting with 150.80.0.0/16. The ISP wants to distribute these blocks to 2600 customers as follows. a) 200 medium size businesses; each needs 16 addresses b) 400 small businesses; each needs 8 addresses c) 2000 households; each needs 4 addresses Design the subblocks and give the slash notation for each subblock. Find out how many addresses are still available after these allocations.

0 Answers   UOG,

What is a differential amplifier?

0 Answers  

Why reverse power relay is used?

12 Answers  

Can anyone explain about Control and power circuits of star delta starter & DOL starter ? How it works? please!

1 Answers  

what is MFD value in capacitor?I have 201 Kva load & reactive power is 150 Kvar. so how it is calculated?

2 Answers   IIT,

what is principle in relay testing kit?

3 Answers