Electrical Machines A DC generator can be considered as power pump. rectifier. rotating amplifier. prime mover. power pump. rectifier. rotating amplifier. prime mover. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a loaded DC generator, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will deteriorate with fall of terminal voltage. improve with rise in terminal voltage. improve with fall of terminal voltage. deteriorate with rise in terminal voltage. deteriorate with fall of terminal voltage. improve with rise in terminal voltage. improve with fall of terminal voltage. deteriorate with rise in terminal voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The size of inter poles is small as compared to main poles. What is the reason? In order to get more flux. All of these In order to not to get saturated. In order to get saturated. In order to get more flux. All of these In order to not to get saturated. In order to get saturated. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for series motors. differential compound motors. shunt motors. separately excited motors. series motors. differential compound motors. shunt motors. separately excited motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, 1. physically, the brush axis is along the direct axis 2. physically, the brush axis is along the interpolar axis 3. schematically, the brush axis is along the direct axis 4. schematically, the brush axis is along the quadrature axis 5. armaturemmf is directed along the brush axis From these, the correct statements are 1 , 3, 5 1, 4,5 2, 4, 5 2, 3, 5 1 , 3, 5 1, 4,5 2, 4, 5 2, 3, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A generator may loose residual magnetism due to vibrations. any of these. over excitation. heating. vibrations. any of these. over excitation. heating. ANSWER DOWNLOAD EXAMIANS APP
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