Why Transformer in KVA?

Answer Posted / vidushi

The X-mer o/p is limited by heating and hence by the losses
in the X-mer. There are two kinds of losses in the X-mer:
copper losses (ohmic losses) and iron losses. ohmic losses
(I*I*R) depend upon current while core losses depend upon X-
mer voltage and are almost unaffected by X-mer P.F.. Hence
the rated o/p is expressed in VA (V*I) or in KVA and not in
KW.

Is This Answer Correct ?    14 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

help me with the question that might be ask on the interview for technical position

1815


How to know of any cable size if there are not written on cabl?

1453


The size and construction of bushings in a transformer depend upon?

1195


What is the Basic Difference bitween Long Shunt Connection and Short Shunt Connection in DC Generator?

1814


How to find out damper winding failure for synchronous machine?

999






Explain with example of functional requirements of protection relay in terms reliability, selectivity, sensitivity

1390


explain me the relation between torque, frequency,speed,voltage and current in the 3 phase induction motor?

1757


what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer

2434


DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.

1522


If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

1649


what is a speed of rotor when we give supply to stator of 50hz and as well as rotor of 60hz of an induction motor?????

1237


How to design the NGR Resistance

1621


I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

1405


ow can i get certificate of competency as electrical supervisor and my diploma in electrical engineering from jalgaon.

1871


what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

1838