Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors. Calculate the back emf produced when it is running at a speed of 1500 rpm. 220 volt. 440 volt. 240 volt. 230 volt. 220 volt. 440 volt. 240 volt. 230 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the actual flux distribution depends upon shape of the pole shoe. size of air gap. all of above. clearance between tips of the adjacent pole shoes. shape of the pole shoe. size of air gap. all of above. clearance between tips of the adjacent pole shoes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The three point starter is used for Series motor. Shunt, compound and series motor. Shunt motor. Shunt motor as well as compound motors. Series motor. Shunt, compound and series motor. Shunt motor. Shunt motor as well as compound motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Motor 3 point starter is used to limit the starting current to a safer value. provide overload protection. all of above. provide protection against Low-Voltage. limit the starting current to a safer value. provide overload protection. all of above. provide protection against Low-Voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? None of these MNA GNA either GNA or MNA None of these MNA GNA either GNA or MNA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To get the speed of DC motor more than normal without wastage of electrical energy _____________ is used. none of above. any of above method. rheostatic control. Ward Leonard control. none of above. any of above method. rheostatic control. Ward Leonard control. ANSWER DOWNLOAD EXAMIANS APP
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