Electrical Machines The output power of a dc motor is given by EIa. EbIa2. none of these. EbIa. EIa. EbIa2. none of these. EbIa. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is also called as-----------? constant voltage control constant current control constant power control constant torque control constant voltage control constant current control constant power control constant torque control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Generator works on the principle of production both A and B. None of these static induced emf. dynamically induced emf. both A and B. None of these static induced emf. dynamically induced emf. 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. slip speed. normal speed. any of the above. synchronous speed. slip speed. normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The following statements relate to compensating winding (CW) and interpole winding (IW) of a dc machine : 1. CW neutralizes the armature reaction under a pole pitch 2. IW is connected in series with armature circuit 3. IW produces mmf in the commutating zone only 4. CWmmf is directed along the brush axis 5. Mmf produced by IW is equal to armature mmf From these, the correct statements are 2, 3, 4, 5 2, 3, 4 1, 2, 3, 4 and 5 1, 3, 4, 5 2, 3, 4, 5 2, 3, 4 1, 2, 3, 4 and 5 1, 3, 4, 5 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? 11% 21% 10% 41% 11% 21% 10% 41% ANSWER DOWNLOAD EXAMIANS APP
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