Electrical Machines A 3-phase 6 pole 50 Hz induction motor is running at 5% slip.What is the speed of the motor? 950 rpm 1000 rpm 850 rpm 900 rpm 950 rpm 1000 rpm 850 rpm 900 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A simple method of increasing the voltage of a DC generator is to increase the source frequency. increase the speed of shaft rotation. increase the number of turns in armature coil. increase the number of turns in field coil. increase the source frequency. increase the speed of shaft rotation. increase the number of turns in armature coil. increase the number of turns in field coil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 240 V. 150 V. 220 V. 280 V. 240 V. 150 V. 220 V. 280 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series booster is a series wound DC generator. shunt wound DC generator. permanent magnet DC generator. separately excited DC generator. series wound DC generator. shunt wound DC generator. permanent magnet DC generator. separately excited DC generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor torque or load angle δ ------------- with increase in load None of these increases decreases remains unaffected None of these increases decreases remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principle of operation of a 3 - Φ induction motor is almost similar to that of synchronous motor. capacitor start induction motor. repulsion start induction motor. transformer with secondary short circuited. synchronous motor. capacitor start induction motor. repulsion start induction motor. transformer with secondary short circuited. ANSWER DOWNLOAD EXAMIANS APP
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