Electrical Machines Maximum power will be developed when back emf is equal to supply voltage. half of the supply voltage. double the supply voltage. All of these equal to supply voltage. half of the supply voltage. double the supply voltage. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ induction motor power factor at starting in the same as that while running. power factor at starting is high as compared to that while running. power factor at starting is low as compared to that while running. none of them. power factor at starting in the same as that while running. power factor at starting is high as compared to that while running. power factor at starting is low as compared to that while running. none of them. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following induction motor has the highest starting torque? Slip ring induction motor. Squirrel cage induction motor. Same in both induction motors. None of these Slip ring induction motor. Squirrel cage induction motor. Same in both induction motors. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be 6 V less than 6 V more than 6 V zero 6 V less than 6 V more than 6 V zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direction of the current in the compensating winding is________ to the direction of current in the armature conductors? None of these either of these exactly opposite same None of these either of these exactly opposite same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction of an unsaturated DC machine is magnetising. demagnetising. crossmagnetising. none of above. magnetising. demagnetising. crossmagnetising. none of above. ANSWER DOWNLOAD EXAMIANS APP
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