Electrical Machines The power flow of a dc motor, with respect to a DC generator is modified. increased. reversed. none of these. modified. increased. reversed. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What happens if fifth multiples of harmonics is given to induction motor? Fail to start. It will rotates in normal operation. Either short circuit or open circuit occurs. It will rotates in reverse direction. Fail to start. It will rotates in normal operation. Either short circuit or open circuit occurs. It will rotates in reverse direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor must started on no load because it would Not develop starting torque. Draw more current without producing sufficient torque. Run at dangerously high speed. Fail to start without load. Not develop starting torque. Draw more current without producing sufficient torque. Run at dangerously high speed. Fail to start without load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings is placed in which part of a D.C motor? On yoke in the pole faces. On armature. None of these On yoke in the inter pole gap. On yoke in the pole faces. On armature. None of these On yoke in the inter pole gap. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator core of a 3 - Φ induction motor is laminated in order to reduce the both of the above. weight of the stator. hysteresis loss. eddy current loss. both of the above. weight of the stator. hysteresis loss. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased power angle decrease and power factor increase both power angle and power factor decrease power angle increase and power factor decrease both power angle and power factor increase power angle decrease and power factor increase both power angle and power factor decrease power angle increase and power factor decrease both power angle and power factor increase ANSWER DOWNLOAD EXAMIANS APP
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