Electrical Machines Which of these types of motor is used in elevators? DC series motor. DC compound motor. None of these. DC shunt motor. DC series motor. DC compound motor. None of these. DC shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which slots are used in the rotor of an induction motor? None of above. Closed slots. Open slots. Semi closed slots. None of above. Closed slots. Open slots. Semi closed slots. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stability of a synchronous motor ---------- with the increase in excitation. any of the above remains unaffected decreases increases any of the above remains unaffected decreases increases ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a cumulatively compound DC motor can be controlled by varying Any of above. Shunt field resistance control. Armature voltage control. Armature resistance control. Any of above. Shunt field resistance control. Armature voltage control. Armature resistance control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 120 KW, 50 Hz, star connected synchronous motor operating at 0.8 power factor leading has full load efficiency of 91%. The armature resistance is equal to 0.08Ω. The magnitude of armature current is nearly equal to 240 A. 173 A. 127 A. 190 A. 240 A. 173 A. 127 A. 190 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in a DC machine makes an angle with the main pole axis which is load dependent. is in direct opposition to the main poles. makes an angle of 90° with the main pole axis. is in the same direction as the main poles. makes an angle with the main pole axis which is load dependent. is in direct opposition to the main poles. makes an angle of 90° with the main pole axis. is in the same direction as the main poles. ANSWER DOWNLOAD EXAMIANS APP
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