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. 0 V. 60 V. 40 V. 20 V. 0 V. 60 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be steady and unidirectional pulsating and unidirectional oscillating None of these steady and unidirectional pulsating and unidirectional oscillating None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal DC generated is one that has _____________ voltage regulation. positive. zero. negative. low. positive. zero. negative. low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the temperature of armature resistance is increased, the speed of a series motor would None of above. increase. not change. decrease. None of above. increase. not change. decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Shunt Motor having shunt field resistance of 250 Ω and armature resistance of 0.5 Ω is connected to 250 V supply and load current of 21 A. What is the back emf generated ? 150 V. 240 V. 230 V. 210 V 150 V. 240 V. 230 V. 210 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors is/are widely used? either of these None of these slip ring induction motor squirrel cage induction motor either of these None of these slip ring induction motor squirrel cage induction motor ANSWER DOWNLOAD EXAMIANS APP
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