Electrical Machines The heat transfer by convection in a transformer least depends on surface area. color of the paint. air velocity. temperature difference. surface area. color of the paint. air velocity. temperature difference. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Current in a coil undergoing commutation is not able to get reversed completely by the end of commutation period. It is due to armature emf. reactance voltage induced in the coil. None of these coil resistance. armature emf. reactance voltage induced in the coil. None of these coil resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively less and thick less and thin large and thin large and thick less and thick less and thin large and thin large and thick ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutators in DC machines have a role of which converts AC to DC. none of these. Both AC to DC and DC to AC. high voltage DC to low voltage DC. AC to DC. none of these. Both AC to DC and DC to AC. high voltage DC to low voltage DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce vibrations. hysteresis loss. copper loss. eddy electric current loss. vibrations. hysteresis loss. copper loss. eddy electric current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor start capacitor run provides high staring torque and high power factor. high power factor only. none. high staring torque only. high staring torque and high power factor. high power factor only. none. high staring torque only. ANSWER DOWNLOAD EXAMIANS APP
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