Electrical Machines What is power factor of a 3 - φ induction motor at no load? Equal to 1. Same as full load. High. Low. Equal to 1. Same as full load. High. Low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 440 V, 3-phase, 10 pole and 50 HZ synchronous motor delivering a torque of 50 N-m, delivers a power of 500W 3000W 1000W 100W 500W 3000W 1000W 100W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its speed will reduce its efficiency will improve its speed will increase its power factor will reduce its speed will reduce its efficiency will improve its speed will increase its power factor will reduce ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase transformer when supplied from 220 V, 50 Hz has eddy current loss of 50 W. If the transformer is connected voltage of 330 V, 75 Hz, the eddy current loss will be 50 W 75 W 112.5 W 168.75 W 50 W 75 W 112.5 W 168.75 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 100/10, 50 VA double winding transformer is converted to 100/110 V auto transformer. The rating of auto transformer is 110 VA 500 VA 100 VA 550 VA 110 VA 500 VA 100 VA 550 VA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to high field resistance. high speed. magnetic inertia. residual flux. high field resistance. high speed. magnetic inertia. residual flux. ANSWER DOWNLOAD EXAMIANS APP
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