Electrical Machines In a synchronous motor, damper windings are provided on None of these pole faces. stator frame. rotor shaft. None of these pole faces. stator frame. rotor shaft. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a cumulatively compound DC motor can be controlled by varying Armature voltage control. Shunt field resistance control. Armature resistance control. Any of above. Armature voltage control. Shunt field resistance control. Armature resistance control. Any of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under commutation results in sparking the trailing edge of the brush. no sparking. sparking at the middle of the brush. sparking at the leading edge of the brush. sparking the trailing edge of the brush. no sparking. sparking at the middle of the brush. sparking at the leading edge of the brush. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has got maximum relieving property? Cummulative compound. Series. Differentical compound. Shunt. Cummulative compound. Series. Differentical compound. Shunt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 ,V 15 , kW 100 rpm shunt motor with armature resistance of 0.25 , W has a rated line current of 68 A and a rated field current of 2.2 A. The change in field flux required to obtain a speed of 1600 rpm while drawing a line current of 52.8 A and a field current of 1.8 A is 36.36% decrease 36.36% increase 36.36% increase 18.18% increase 36.36% decrease 36.36% increase 36.36% increase 18.18% increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer both Oc and SC tests are conducted on HV side OC test is conducted on HV side and SC test is conducted on LV side both OC and SC tests are conducted on LV side OC test is conducted on LV side and SC test is conducted on HV side both Oc and SC tests are conducted on HV side OC test is conducted on HV side and SC test is conducted on LV side both OC and SC tests are conducted on LV side OC test is conducted on LV side and SC test is conducted on HV side ANSWER DOWNLOAD EXAMIANS APP
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