Electrical Machines The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is 60 Hz. 50 Hz. 25 Hz. 16.67 Hz. 60 Hz. 50 Hz. 25 Hz. 16.67 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is minimized by laminating the core of a transformer? Copper loss. Eddy current loss. Stray loss. Hysteresis loss. Copper loss. Eddy current loss. Stray loss. Hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced 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. The speed will remains almost constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 3rd harmonics are eliminated in induction motor by using V connection. star connection. delta connection. zig - zag connection. V connection. star connection. delta connection. zig - zag connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as cogging. relative speed. crawling. air gap. cogging. relative speed. crawling. air gap. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. ANSWER DOWNLOAD EXAMIANS APP
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