Electrical Machines In DC series motor the speed is ______________ proportional to the armature current. has no relation. directly. inversely. none of these. has no relation. directly. inversely. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a dc motor the ratio Eb / E is indicative of ratio of starting to running current. efficiency. ratio of starting to running torque. ratio of input to output voltage. ratio of starting to running current. efficiency. ratio of starting to running torque. ratio of input to output voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Select the motor that should not be started on no load? Brushless DC motor. Shunt motor. Compound motor. Series motor. Brushless DC motor. Shunt motor. Compound motor. Series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, brushes are always placed along armature axis. magnetic neutral axis. load axis. geometrical neutral axis. armature axis. magnetic neutral axis. load axis. geometrical neutral axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator sparking between brushes and commutator surface may be due to over commutation. too rapid reversal of current. any of the above. under commutation. over commutation. too rapid reversal of current. any of the above. under commutation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of bearing is provided in small induction motors to support the rotor shaft? Ball bearings. Cast iron bearings. Bush bearings. None of these Ball bearings. Cast iron bearings. Bush bearings. None of these ANSWER DOWNLOAD EXAMIANS APP
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