Electrical Machines A generator may loose residual magnetism due to heating. over excitation. any of these. vibrations. heating. over excitation. any of these. vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following alternators contain large number of poles? Turbo alternators. Aame in both alternators. None of these Hydro alternators. Turbo alternators. Aame in both alternators. None of these Hydro alternators. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor will deliver maximum power when input power factor is unity. load angle is 0°. load angle is 45°. load angle is equal to internal angle θ. input power factor is unity. load angle is 0°. load angle is 45°. load angle is equal to internal angle θ. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutators in DC machines have a role of which converts high voltage DC to low voltage DC. none of these. Both AC to DC and DC to AC. AC to DC. high voltage DC to low voltage DC. none of these. Both AC to DC and DC to AC. AC to DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/Vt ratio of a DC motor is an indication of speed regulation. starting torque. running torque. efficiency. speed regulation. starting torque. running torque. efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC generators has rising V-I characteristics? Compound. None of them. Shunt. Series. Compound. None of them. Shunt. Series. ANSWER DOWNLOAD EXAMIANS APP
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