Electrical Machines In electric locomotives which of the following motor are used ? DC compound motor. Synchronous motor. DC series motor. DC Shunt motor. DC compound motor. Synchronous motor. DC series motor. DC Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To achieve spark less commutation brushes of DC generator are rocked ahead so as to bring them None of these just ahead of magnetic neutral axis. just behind the magnetic neutral axis. in magnetic neutral axis. None of these just ahead of magnetic neutral axis. just behind the magnetic neutral axis. in magnetic neutral axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is prefered for which of the following rating? low current and high voltage high current and high voltage low current and low voltage high current and low voltage low current and high voltage high current and high voltage low current and low voltage high current and low voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is 0.08 1.92 -0.08 -1.92 0.08 1.92 -0.08 -1.92 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, armature reaction refers to what? Effect of armature flux on the main field flux. None of these Effect of field flux on the armature flux. Effect of armature flux on the load. Effect of armature flux on the main field flux. None of these Effect of field flux on the armature flux. Effect of armature flux on the load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase power factor. starting torque. breaking torque. cost of operation. power factor. starting torque. breaking torque. cost of operation. ANSWER DOWNLOAD EXAMIANS APP
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