Why motor is not calculated in kva, whereas transormers are
calculated in kva
Answer Posted / electrical ravi
Normaly Source is rated in KVA where as appliance/Load is
rated in KW.
Transformer converts product of V1 X I1 into V2I2, there is
no lead or lag pf at no Load, so the manufacturer specify
the rating of the transformer in KVA.
In motor, the electrical energy is converted to mechanical
energy and there is losses within the unit and there is
phase difference between voltage and current and thus
forming a builin power factor. So the manufacturer of motor
specifies the rating in KW with powerfactor value on its
name plate.
Is This Answer Correct ? | 9 Yes | 2 No |
Post New Answer View All Answers
what do u understand about FACTS? how they are useful?
relation between power station capacity and voltage level?
State thevenin’s theorem?
Explain using drawings what is reverse PID action w.r.t PID controllers.
what is the effect of back reactive power on the generator ?
Write a note on Treatment for electric shock.
what is the difference between earthing and unearth
what is RFCT and Insulgard Relay & It's function?
What would be the size of wire used for 2 Ton of window A.C?
Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks
How to choose size of the cable w.r.to current carrying capacity ...
What is the efficiency during maximum power transfer?
What is PEC??Applications........
What is the previous name of Cox's Bazar
In what cases (circumstances)we should apply P controller, PD controller, PI controller & PID controller ?