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. 340 A. 570 A. 250 A. 460 A. 340 A. 570 A. 250 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? both A and B flux(φ) None of these armature current(Ia) both A and B flux(φ) None of these armature current(Ia) 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 0 V. 40 V. 60 V. 20 V. 0 V. 40 V. 60 V. 20 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor during DC rheostatic braking is 2 + s. 1 - s. s. 2 - s. 2 + s. 1 - s. s. 2 - s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator, when driven without any excitation, showed an open circuit voltage of 12 V. When the field winding was excited, the voltage dropped to zero. It happened because field resistance was higher than critical resistance there was a break in the armature circuit field winding was wrongly connected there was no residual magnetism in the field circuit field resistance was higher than critical resistance there was a break in the armature circuit field winding was wrongly connected there was no residual magnetism in the field circuit ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors have the advantage of simple in construction. all of below. less cost. less maintenance. simple in construction. all of below. less cost. less maintenance. ANSWER DOWNLOAD EXAMIANS APP
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