Electrical Machines What happens if fifth multiples of harmonics is given to induction motor? It will rotates in normal operation. It will rotates in reverse direction. Either short circuit or open circuit occurs. Fail to start. It will rotates in normal operation. It will rotates in reverse direction. Either short circuit or open circuit occurs. Fail to start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following transformer insulating oil generally used in India? Aromatics based insulating oil. Naphtha based insulating oil. Paraffin based insulating oil. Olefin based insulating oil. Aromatics based insulating oil. Naphtha based insulating oil. Paraffin based insulating oil. Olefin based insulating oil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For an ideal transformer the winding should have maximum resistance on primary side and least resistance on secondary side minimum resistance on primary side and maximum resistance on secondary side no ohmic resistance on either side equal resistance on primary and secondary side maximum resistance on primary side and least resistance on secondary side minimum resistance on primary side and maximum resistance on secondary side no ohmic resistance on either side equal resistance on primary and secondary side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced DC Shunt Motor The speed will increase in proportion to reduction in load. The speed will remains almost constant. The speed will increase abruptly. DC Shunt Motor 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 Reluctance and hysteresis motors are the types of which electrical motor? Stepper motor. DC motor. 1 - Φ synchronous motor. 3 - Φ induction motor. Stepper motor. DC motor. 1 - Φ synchronous motor. 3 - Φ induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer the magnetic coupling between the primary and secondary winding can be increased by increasing the number of turns. using the magnetic core of low reluctance. using transformer oil of better quality. using soft material for winding. increasing the number of turns. using the magnetic core of low reluctance. using transformer oil of better quality. using soft material for winding. ANSWER DOWNLOAD EXAMIANS APP
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