Answer / j.prakash

Transformer is static device there is no any rotating part
so there is no any friction losses, only iron loss and cu
loss in transformer, iron loss depend upon the voltage and
cu loss depend upon the current, there in no any loss which
depend upon power factor,so rating of transformer only in
kva.SO NOT IN KW..

Answer / narendra

the transformer rating in kva.the substaion step down or
step up the voltage the current will be constant

Answer / sunil bhuarya

above answer is correct if we talk about transformer, but as question is why s/s in kv....?? transmission capacity of incoming feeder is named as 400Kv, 220KV 132KV and so on...
for ex. in 220KV/132KV/33KV s/s there will be at least one /two 220Kv line and 132KV outgoing feeders that may be depend on the requirement..

Answer / k.prakashchandra

The structure and insulation levels of materials used are
designed on the basis of system voltage which remains unaltered.

A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque developed is 20 Nm under rated field condtion. the speed of the motor under the rated field condtion , when it is connected to a 100V DC source and delivering 10Nm torque....

2 Answers   DRDO,

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7 Answers   MSPL,

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1 Answers   Bhel, TN,

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describe the Tranformer testing procedure

1 Answers  

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1 Answers   RRB,

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1 Answers  

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