Electrical Machines If a DC motor is connected across the AC supply it will Burn. Not run. Run at normal speed. Run at lower speed. Burn. Not run. Run at normal speed. Run at lower speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following motors DC excitation is not required? hysteresis motor reluctance motor 3-phase synchronous motor 3-phase synchronous generator hysteresis motor reluctance motor 3-phase synchronous motor 3-phase synchronous generator ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the armature windings are placed on the rotor because of the necessity for development of torque electromechanical energy conversion generation of voltage commutation development of torque electromechanical energy conversion generation of voltage commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is true for an AC synchronous motor? It is a constant speed motor. It is a variable speed motor. It is a high reluctance motor. It is a step angled motor. It is a constant speed motor. It is a variable speed motor. It is a high reluctance motor. It is a step angled motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC Series motor, speed lower than the rated speed can be obtained by Connecting an additional resistance in the armature circuit. Any of the above. Connecting an additional resistance in the field circuit. Connecting an additional resistance in stator circuit. Connecting an additional resistance in the armature circuit. Any of the above. Connecting an additional resistance in the field circuit. Connecting an additional resistance in stator circuit. ANSWER DOWNLOAD EXAMIANS APP
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