Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? +3% +3.33% -3.33% -3% +3% +3.33% -3.33% -3% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 2 KVA transformer has iron loss of 150 W and full load copper loss of 250 W. The maximum efficiency of the transformer would occur when the total loss is 500 W 400W 300 W 250 W 500 W 400W 300 W 250 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be 625 W 700 W 600 W 650 W 625 W 700 W 600 W 650 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced The speed will remains almost constant. The speed will increase in proportion to reduction in load. DC Shunt Motor The speed will increase abruptly. The speed will remains almost constant. The speed will increase in proportion to reduction in load. DC Shunt Motor The speed will increase abruptly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? Star side leads by 30°. Star side lags by -30°. Delta side leads by 30°. Delta side lags by -30°. Star side leads by 30°. Star side lags by -30°. Delta side leads by 30°. Delta side lags by -30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In above question, find rms line voltage for delta connection? 100 V. 230.2 V. 50 V. 399 V. 100 V. 230.2 V. 50 V. 399 V. ANSWER DOWNLOAD EXAMIANS APP
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