Electrical Machines The self induced emf in the coil undergoing commutation is called the dynamically induced voltage. None of these reactance voltage. statically induced voltage. dynamically induced voltage. None of these reactance voltage. statically induced voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An unexcited single phase synchronous motor is AC series motor. reluctance motor. universal motor. repulsion motor. AC series motor. reluctance motor. universal motor. repulsion motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be 15.92 Nm 16.55 Nm 15.6 Nm 15.28 Nm 15.92 Nm 16.55 Nm 15.6 Nm 15.28 Nm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods of speed control is not affected through stator side? Change of number of pole. Change of rotor resistance. Change of supply frequency. Change of supply voltage. Change of number of pole. Change of rotor resistance. Change of supply frequency. Change of supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In double cage induction motor, the inner cage offers low resistance and high reactance. low resistance and low reactance. high resistance and high reactance. high resistance and low reactance. low resistance and high reactance. low resistance and low reactance. high resistance and high reactance. high resistance and low reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The compensating winding in a DC machine is located on pole shoes for avoiding the flashover at the commutator. is located in armature slots for compensation of the armature reaction. is located on pole shoes to avoid the sparking at the brushes. is located on commutating poles for improving commutation. is located on pole shoes for avoiding the flashover at the commutator. is located in armature slots for compensation of the armature reaction. is located on pole shoes to avoid the sparking at the brushes. is located on commutating poles for improving commutation. ANSWER DOWNLOAD EXAMIANS APP
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