Electrical Machines The induction motor shaft is made of aluminium. cast iron. stainless steel. mild steel. aluminium. cast iron. stainless steel. mild steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For same HP rating and full load speed which of following motor has poor starting torque? Shunt. Series. Differently compounded. Cummulative compound. Shunt. Series. Differently compounded. Cummulative compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The material used for commutator brushes is mostly mica. copper. cast iron. carbon. mica. copper. cast iron. carbon. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under commutation results in sparking at the leading edge of the brush. sparking at the middle of the brush. sparking the trailing edge of the brush. no sparking. sparking at the leading edge of the brush. sparking at the middle of the brush. sparking the trailing edge of the brush. no sparking. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 volt dc motor has an armature winding resistance of 0.5 ohm. Calculate the emf induced by the motor if the full load armature current is 23 ampere. 218.5 volt. 120 volt. None of these. 220.4 volt. 218.5 volt. 120 volt. None of these. 220.4 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Shunt Motor having shunt field resistance of 250 Ω and armature resistance of 0.5 Ω is connected to 250 V supply and load current of 21 A. What is the back emf generated ? 210 V 240 V. 150 V. 230 V. 210 V 240 V. 150 V. 230 V. ANSWER DOWNLOAD EXAMIANS APP
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