why rating of transformer is in kva instead of kw?

Question Posted / naveen.gautam89@gmail.com

3 Answers
4657 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

why rating of transformer is in kva instead of kw?..

Answer / waqar ahmed

Total t/f loss depend on vA copper loses depend on current &irnon loses depend on voltage not on phase angel between &current.it is independent of load power factor thats why t/f is in kva not in kw.hope u wil be satisfied

Is This Answer Correct ?

2 Yes

0 No

why rating of transformer is in kva instead of kw?..

Answer / guest

The transformer is designed to supply rated total power to the
load. So its rated in KVA and not in KW

Is This Answer Correct ?

3 Yes

2 No

why rating of transformer is in kva instead of kw?..

Answer / ali

the transformer total power is sq root of (apparent power)2 + reactive power)2 ... so the apparent power is always in kva and it is also depends upon the current and voltage ratings

Is This Answer Correct ?

1 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

which is the most advanced form of SF6 BREAKER?Can we use other gases to quench the arc?

0 Answers TATA,

I want to know if it is possible to use Variable Frequency Drive to reduce the current required for starting a motor?

3 Answers Descon,

Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. I am going to install a oo kva transformer & 380 kva dg set what should the earthing value?

0 Answers

Caliculate the Specific Fuel consumption of 320 kva diesel genarator set?

3 Answers AllTech, RRB,

what is the use of power factor ? where its applicable ?

4 Answers

What is kirchoff ’s current law (kcl)?

0 Answers

why current is constant on d.c?

0 Answers

What is the relation between frequency and motor rpm?

0 Answers

How to check the specific gravity of the two 12 V batteries connected in series to a 24 V UPS and inverter ? will we have to disconnect all the connections and turn off the UPS and inverter or not ? will we have to check specific gravities in each cell of the two batteries ? what is the name of the instrument that is used to check the specific gravity and whats the procedure to check the specific gravity with it ? thanks

2 Answers

if AVR fails in alternator. what will be the effect.

13 Answers HP,

if 20 hp motor starts directly delta connection.motor what will be the effect.

3 Answers HP,

why we don't use air circuit breaker on H T line in place of vacuum circuit breaker ?

2 Answers Jindal,

For more Electrical Engineering Interview Questions Click Here