why transformer ratings in kva?
Answer Posted / r. anand
Both the losses of the transformer is independent of the
power factor (cos phi), which means a transformer would not
make any change in the power factor, since both the losses
viz copper loss(depends on current) and iron loss(depends
on voltage) are independent of power factor, that is why a
Transformers rating is not on kW, but on KVA
| Is This Answer Correct ? | 857 Yes | 99 No |
Post New Answer View All Answers
I want to know how to calculate the size of electricity cable in building?
What is tan delta & PPM in transformer? and whats its IS value?
How to calculate the heat load for a electrical room
Mention what are the types of semi-conductors?
Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.
what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?
Name of the relay of low lub oil presuure in DG sets
The series field winding has low resistance while the shunt field winding has high resistance. Why?
State the frequency for rc phase shift oscillator?
why we used ZNO in Lightning arrester.
what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end
while doing high voltage test on 11kv/433 distribution transformer why we only give 28 kv on hv side and 3kv on lv side for power transformers what is the value what factors it depends
How many size of cable required for a 300m long and 30kw inductive lode
Why can't we parallel the secondary circuits of two voltage transformers?
IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8