Electrical Machines Eb/V ratio of a DC motor is an indication of Running Torque. Starting torque. Speed regulation. Effiency. Running Torque. Starting torque. Speed regulation. Effiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the residual magnetism is of the order of 15 %. 10 %. 2.5 %. 20 %. 15 %. 10 %. 2.5 %. 20 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a loaded DC motor, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will deteriorate and the speed falls. deteriorate and the speed rises. improve and the speed falls. improve and the speed rises. deteriorate and the speed falls. deteriorate and the speed rises. improve and the speed falls. improve and the speed rises. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 180. 30. 45. 270. 180. 30. 45. 270. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer the magnetic coupling between the primary and secondary winding can be increased by using transformer oil of better quality. increasing the number of turns. using soft material for winding. using the magnetic core of low reluctance. using transformer oil of better quality. increasing the number of turns. using soft material for winding. using the magnetic core of low reluctance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is advisable to start a DC series motor with some load to Avoid sparking. Limit the speed. Limit the flux. Limit the current. Avoid sparking. Limit the speed. Limit the flux. Limit the current. ANSWER DOWNLOAD EXAMIANS APP
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