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1. |
Consider the following data regarding the name plate of 1-phase, 4-pole induction motor: Output = 373 W; 230 V, frequency = 50 Hz, input current = 2.9 A, power factor = 0.71, speed = 1410 rpm. The efficiency of motor will be nearly |
A. | 72.8% |
B. | 78.8% |
C. | 84.4% |
D. | 88.4% |
Answer» C. 84.4% | |