Electrical Machines Armature reaction effect is more in which of the following methods? field weakening method None of these armature resistance control same in both methods field weakening method None of these armature resistance control same in both methods ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During no load test, an induction motor draws power for copper loss and windage friction loss. for core loss and copper loss. only for the small copper loss. for core loss and windage and friction loss. for copper loss and windage friction loss. for core loss and copper loss. only for the small copper loss. for core loss and windage and friction loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC machine has an armature resistance 1 Ω. If the full load current is 20 A, the difference of induced voltage between generator and motor is 40 V. 20 V. 60 V. 0 V. 40 V. 20 V. 60 V. 0 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms is connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 460 A. 250 A. 570 A. 340 A. 460 A. 250 A. 570 A. 340 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is 16.67 Hz. 60 Hz. 50 Hz. 25 Hz. 16.67 Hz. 60 Hz. 50 Hz. 25 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC series motor is best suited for electric traction as It develops high starting torque. It runs at very high speed at light load. It consume less power. It is cheaper in cost. It develops high starting torque. It runs at very high speed at light load. It consume less power. It is cheaper in cost. ANSWER DOWNLOAD EXAMIANS APP
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