Electrical Machines When the excitation of normally operating unloaded, salient pole synchronous motor suddenly gets disconnected, it continues to run as a induction motor. variable reluctance motor. DC motor. switched reluctance motor. induction motor. variable reluctance motor. DC motor. switched reluctance motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is advisable to start a DC series motor with some load to Avoid sparking. Limit the current. Limit the speed. Limit the flux. Avoid sparking. Limit the current. Limit the speed. Limit the flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To get the speed of DC motor more than normal without wastage of electrical energy _____________ is used. rheostatic control. any of above method. none of above. Ward Leonard control. rheostatic control. any of above method. none of above. Ward Leonard control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor in split phase induction motor is used to reduce the harmonics. improve the starting torque. start the motor. improve the power factor. reduce the harmonics. improve the starting torque. start the motor. improve the power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The inertia constant H of a synchronous condenser is equal to that of the effective length of the line. greater than that of turbo alternator. none of these. greater than that of hydro generator. equal to that of the effective length of the line. greater than that of turbo alternator. none of these. greater than that of hydro generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator sparking between brushes and commutator surface may be due to under commutation. too rapid reversal of current. any of the above. over commutation. under commutation. too rapid reversal of current. any of the above. over commutation. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS