Electrical Machines A 8-pole, DC generator has a simplex wave-wound armature containing 32 coils of 6 turns each. Its flux per pole is 0.06 Wb. The machine is running at 250 rpm. The induced armature voltage is 192 V 384 V 96 V 768 V 192 V 384 V 96 V 768 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3-phase, 4 pole, 50 Hz synchronous motor the frequency, pole number and the frequency are halved. The motor speed will be 1500 rpm 75 rpm 375 rpm 3000 rpm 1500 rpm 75 rpm 375 rpm 3000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the rotating losses of machine? Friction and windage losses All of the them Eddy current losses Hysteresis losses Friction and windage losses All of the them Eddy current losses Hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, if the supply voltage and frequency are reduced by the same ratio, then slip at which maximum torque occurs is more and maximum torque decreases less and maximum torque increases less and maximum torque decreases more and maximum torque remains constant more and maximum torque decreases less and maximum torque increases less and maximum torque decreases more and maximum torque remains constant ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type motors are preferred for lathes? Either A or B. DC shunt motors. Squirrel Cage induction motor. Synchronous motor. Either A or B. DC shunt motors. Squirrel Cage induction motor. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? both A and B variable loss None of these constant loss both A and B variable loss None of these constant loss ANSWER DOWNLOAD EXAMIANS APP
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