Electrical Machines The starting resistance of DC motor is generally Infinitely large. 1000 ohms. around 500 ohms. Low. Infinitely large. 1000 ohms. around 500 ohms. Low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The overall power factor of an on load transformer is always unity. is always lagging. depends on the power factor of the load. is always leading. is always unity. is always lagging. depends on the power factor of the load. is always leading. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is self starting? None of these. Single phase induction motor. Poly-phase synchronous machine. Poly-phase induction motor. None of these. Single phase induction motor. Poly-phase synchronous machine. Poly-phase induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs decrease. either of these. increase. None of these decrease. either of these. increase. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:- 2 and 4. 2, 3 and 4. 1, 3 and 4. 1, 2 and 3. 2 and 4. 2, 3 and 4. 1, 3 and 4. 1, 2 and 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature MMF waveform of a DC machine is rectangular. triangular. sinusoidal. pulsating. rectangular. triangular. sinusoidal. pulsating. ANSWER DOWNLOAD EXAMIANS APP
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