Electrical Machines A 4 pole dc generator is running at 1500 rpm the frequency of current in the armature winding is 200Hz. 100Hz. 150Hz. 50Hz. 200Hz. 100Hz. 150Hz. 50Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V, I and P V, I/2 and P/2 V/2, I/2 and P/4 V/2, I and P/2 V, I and P V, I/2 and P/2 V/2, I/2 and P/4 V/2, I and P/2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage regulation of transformer is given by (E2 - V2) / V2 (V2 - E2) / E2 (V2 - E2) / V2 (E2 - V2) / E2 (E2 - V2) / V2 (V2 - E2) / E2 (V2 - E2) / V2 (E2 - V2) / E2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shunt dc motor the direction of rotation of the motor will reversed. When only armature terminals are reversed. either field terminals are reversed or armature terminals are reversed. none of above. only field terminals are changed. only armature terminals are reversed. either field terminals are reversed or armature terminals are reversed. none of above. only field terminals are changed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause heating of rotor. vibrations. double frequency currents in the rotor. All of these heating of rotor. vibrations. double frequency currents in the rotor. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ induction motor power factor at starting is high as compared to that while running. none of them. power factor at starting is low as compared to that while running. power factor at starting in the same as that while running. power factor at starting is high as compared to that while running. none of them. power factor at starting is low as compared to that while running. power factor at starting in the same as that while running. ANSWER DOWNLOAD EXAMIANS APP
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