Gate EE-2006 Question Paper With Solutions

Q. 41.A 3-phase, 10 kW, 400 V, 4-pole, 50Hz, star connected induction motor draws 20 A on full load. Its no load and blocked rotor test data are given below

No Load Test:               400 V       6 A     1002 W
Blocked Rotor Test :        90 V        15 A    762 W

 

Neglecting copper loss in no load test and core loss in blocked rotor test, estimate
motor’s full load efficiency

(A) 76%

(B) 81%

(C) 82.4%

(D) 85%

Answer:(B)

Explanation:

Gate EE-2006 Question Paper With SolutionsGate EE-2006 Question Paper With Solutions

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