Electrical Machines The starting resistance of DC motor is generally 1000 ohms. around 500 ohms. Infinitely large. Low. 1000 ohms. around 500 ohms. Infinitely large. Low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is 4/3. 16/9. 9/16. 3/4. 4/3. 16/9. 9/16. 3/4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Reduce. Oscillate around the normal speed. Remain unaltered. Increase. Reduce. Oscillate around the normal speed. Remain unaltered. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is S.Ns Ns Zero Nr S.Ns Ns Zero Nr ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will increase gradually. The speed will increase in proportion to reduction in load. The speed will remains almost constant. The speed will increase abruptly. The speed will increase gradually. The speed will increase in proportion to reduction in load. The speed will remains almost constant. The speed will increase abruptly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loop represents the area of eddy current loss hysteresis loss copper loss total iron losses eddy current loss hysteresis loss copper loss total iron losses ANSWER DOWNLOAD EXAMIANS APP
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