A motor has copper loss of 300 W and 4.5% slip. How much electrical power is converted to mechanical power?

A motor has copper loss of 300 W and 4.5% slip. How much electrical power is converted to mechanical power?

Solution:

Here,

Copper loss, Pcr = 300 W.

Slip, s = 4.5% = 0.045.

Electrical Power converted to mechanical, P_m = ?

We know, P_cr / P_m= s /(1-s).

P_m = P_cr*(1-s) /s = 300 * (1- 0.045) / 0.045 = 6366.67 Watt. (Ans)

EEE Job Math-3

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