why transformer are rated in KVA not in watt?

Answer Posted / c_elavarasi@yahoo.com

we know,real power P=VIcos@ ,which is represented in KW.
the apparent power S=VI ,which is represented in KVA. so if
we wish to represent the rating in watt,we need the power
factor value.the power factor of the load is not known when
the transformer is manufactured,so we represent rating in
KVA as it is in no need of power factor

Is This Answer Correct ?    44 Yes 16 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What are the necessary components of the feedback control system?

734


what is cathodic protaction?

1497


What are the advantages of vscf wind electrical system?

650


what is d check in dg 1500kva

1594


how to select the mpcbs and contactor for 3 phase 30 hp star delta motors.for plc control.and tell me the calaculation for future use.

1472






Define the term Capacitance and Inductance?

662


What is maximum power transfer theorem?

651


what is the use of Auto re-closer?

1654


Merits & Demarits of Oil circuit & Air circuit breakers ?

1617


it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.

1500


I am doing apprenticeship training at HT switch yard in NLC. How can i get electrical c license. ??? What r the rules for getting it as an apprentice? ??

1375


In Generator How suction compression power and exhaust works ?

1457


how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable

1063


In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?

1494


Difference between Lugs and Thimbles

13778