why the motor is rated as kw& transformer as kva

Answer Posted / subhajit

Power output of a motor depends upon the power factor . If
power factor is less it will affect the power consumption of
the motor from the supply mains.

Whereas in case of transformer, its output does not depend
upon power factor. So it is always rated in kva not kw.

Is This Answer Correct ?    0 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

is it possible to test of bus bar in high rise building without completed full floor ?

1183


is there any lightning by passer is arranged in ship like buildings?

1480


WHAT IS ELECTRICAL MAINTAINTENCE ?

1566


What is conventional thermal current (Ith)

3832


We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's

1455






Pl. give me checklist for installation & commissioning of machine tool.

1767


what will happen reduce the transformer voltage from 415v to 406v, is it save the energy,? are this methodis good to reduce the energy.?

1106


I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions

1205


if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1541


What is the role of Dedicated earthing in UPS System?

2640


Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.

1239


what is meant by loss of field in a DC motor? how a universal motor works?

1395


How many types are using in 220kv/400 kv swith yard

1754


how generator load test is conducted?what are the steps?

1145


Meter p.t. ratio= 3×230/400 , c.t.ratio = 3×1 (2) A what is m.f.

1335