Electrical Machines Eb/V ratio of a DC motor is an indication of Starting torque. Speed regulation. Running Torque. Effiency. Starting torque. Speed regulation. Running Torque. Effiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field-flux axis and armature-mmf axis are respectively along direct axis and indirect axis direct axis and interpolar axis quadrature axis and interpolar axis quadrature axis and direct axis direct axis and indirect axis direct axis and interpolar axis quadrature axis and interpolar axis quadrature axis and direct axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is also called as-----------? constant torque control constant power control constant current control constant voltage control constant torque control constant power control constant current control constant voltage control 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 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? 21% 11% 10% 41% 21% 11% 10% 41% 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 1, 3, 4, 5 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 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS