A 3-phase, 400-V, Y-connected induction motor has an equivalent T-circuit consisting of R₁ = 12, X₁ = 22, equivalent rotor values are R₂ = 1.292, X₂' = 1.5 2. The exciting branch has an impedance of (4+j 40) 2. If slip is 5% find (i) current (ii) efficiency (iii) power factor (iv) output. Assume friction loss to be 250 W. [ (i) 10.8 A (ii) 81% (iii) 0.82 (iv) 5 kW]

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2. A 3-phase, 400-V, Y-connected induction motor has an equivalent T-circuit consisting of
R₁ = 1 2, X₁ = 222, equivalent rotor values are R₂' = 1.2 Q2, X₂ = 1.5 . The exciting branch has an
impedance of (4+j 40) 2. If slip is 5% find (i) current (ii) efficiency (iii) power factor (iv) output.
Assume friction loss to be 250 W.
[ (i) 10.8 A (ii) 81% (iii) 0.82 (iv) 5 kW]
Transcribed Image Text:2. A 3-phase, 400-V, Y-connected induction motor has an equivalent T-circuit consisting of R₁ = 1 2, X₁ = 222, equivalent rotor values are R₂' = 1.2 Q2, X₂ = 1.5 . The exciting branch has an impedance of (4+j 40) 2. If slip is 5% find (i) current (ii) efficiency (iii) power factor (iv) output. Assume friction loss to be 250 W. [ (i) 10.8 A (ii) 81% (iii) 0.82 (iv) 5 kW]
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