The resistance of a length of power transmitting cable is 20ohms and is used to transmit 12KV at a current of 1A. If the voltage is...

      

The resistance of a length of power transmitting cable is 20ohms and is used to transmit 12KV
at a current of 1A. If the voltage is stopped up to 18KV by a transformer, determine the
power loss. (Assume the transformer is ideal)

  

Answers


sharon
VpIp = VsIs
12000 x 1 = 1800 x Is
Is = 0.6667A
Power loss = I2R
= 0.66672 x 20 = 8.89w
sharon kalunda answered the question on April 4, 2019 at 10:17


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