Some length of a power line has a resistance of 10? and is transmitting 11kV and a current of 1A. If the voltage is stepped...

      

Some length of a power line has a resistance of 10Ω and is transmitting 11kV and a current of 1A. If the
voltage is stepped up to 160kV by a transformer, calculate:
a) The initial power loss

b) The power loss after step up

  

Answers


Moraa
) The initial power loss
Power loss= I2R =12x10
=10W
b) The power loss after step up
VPIP=VSISt
10kVx1A=160kVxIS
IS=(10/160) =0.06875A
Hence, power loss= 0.068752x10
= 0.048W
Moraa orina answered the question on April 11, 2018 at 17:45


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