Electrical Machines Slot wedges in a dc machine is made up of cast iron. fibre. silicon steel. mild steel. cast iron. fibre. silicon steel. mild steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 41% 10% 11% 21% 41% 10% 11% 21% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines There are two 2-pole DC machines. Main field axis of machine A is horizontal and that of B is vertical. It is preferable to purchase any of the two machines none of these machine A machine B any of the two machines none of these machine A machine B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a standard frequency the machine operates at a particular speed known as any of the above. synchronous speed. normal speed. slip speed. any of the above. synchronous speed. normal speed. slip speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The application that need frequent starting and stopping is blowers. lifts and hoists. paper mills. jaw crushers. blowers. lifts and hoists. paper mills. jaw crushers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case the conditions for maximum power for DC motor are established, the efficiency of the motor will be Around 90 % Less than 50 % Around 100 %. Any where between 75 % and 90 %. Around 90 % Less than 50 % Around 100 %. Any where between 75 % and 90 %. ANSWER DOWNLOAD EXAMIANS APP
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