Electrical Machines The induction motor shaft is made of cast iron. mild steel. aluminium. stainless steel. cast iron. mild steel. aluminium. stainless steel. 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 High inrush of current during a starting of DC motor can efficiently be restricted to a safer value by increasing the _________________ resistance. both A and B armature circuit shunt field none of above both A and B armature circuit shunt field none of above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because it limits the starting current to a safe value. It starts the motor. it limits the speed of the motor. None of these it limits the starting current to a safe value. It starts the motor. it limits the speed of the motor. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Remain unaltered. Reduce. Oscillate around the normal speed. Increase. Remain unaltered. Reduce. Oscillate around the normal speed. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a given torque, reducing divertor resistance of a DC series motor Increase in speed but armature currnet remains the same. Decrease in speed but armature current remains the same. Increase in speed demanding more armature current. Decrease in speed demanding less armature current. Increase in speed but armature currnet remains the same. Decrease in speed but armature current remains the same. Increase in speed demanding more armature current. Decrease in speed demanding less armature current. ANSWER DOWNLOAD EXAMIANS APP
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