Electrical Machines Capacitor start capacitor run provides high staring torque and high power factor. none. high power factor only. high staring torque only. high staring torque and high power factor. none. high power factor only. high staring torque only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Shunt Motor having armature resistance of 0.5 Ω and 2 A armature current at no-load, when the armature current is changed to 20 A at loaded condition the speed is 1000 r.p.m. What is the speed at no-load? 4575.4 r.p.m. none of above. 1130 r.p.m. 1037.5 r.p.m. 4575.4 r.p.m. none of above. 1130 r.p.m. 1037.5 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Saving of copper in auto transformer is increased as compared to two winding transformer, when transformation ratio K approaches to zero. infinity. unity. two. zero. infinity. unity. two. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature MMF waveform of a DC machine is triangular. rectangular. sinusoidal. pulsating. triangular. rectangular. sinusoidal. pulsating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field system has to be provided on stator unlike synchronous machines Where in it could be on any member, because dc machines are comparatively low rating machines. it gives more uniform air-gap flux distribution it reduces field structure iron losses commutator action is not possible otherwise dc machines are comparatively low rating machines. it gives more uniform air-gap flux distribution it reduces field structure iron losses commutator action is not possible otherwise ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has got maximum relieving property? Shunt. Differentical compound. Cummulative compound. Series. Shunt. Differentical compound. Cummulative compound. Series. ANSWER DOWNLOAD EXAMIANS APP
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