(b) A 220-V, 60-Hz, six-pole Y-connected induction motor is (15 marks) rated at 75 kW with...

 

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(b) A 220-V, 60-Hz, six-pole Y-connected induction motor is (15 marks) rated at 75 kW with the equivalent circuit parameter as given below: R₁ = 0.082 02 X₁ =0.19 Q PAG = 15 KW Pcore = 2 kW R₂ = 0.070 Q Xz =0.18 Ω PF&W = 1.5 kW XM=7.20 s =0.04 Pmisc = 100 W Draw the equivalent circuit of the induction motor and determine the overall machine efficiency. (b) A 220-V, 60-Hz, six-pole Y-connected induction motor is (15 marks) rated at 75 kW with the equivalent circuit parameter as given below: R₁ = 0.082 02 X₁ =0.19 Q PAG = 15 KW Pcore = 2 kW R₂ = 0.070 Q Xz =0.18 Ω PF&W = 1.5 kW XM=7.20 s =0.04 Pmisc = 100 W Draw the equivalent circuit of the induction motor and determine the overall machine efficiency.