Electrical Machines Which 1 - Φ motor does operate at high power factor? Shaded pole. Split phase. Capacitor run. Capacitor start. Shaded pole. Split phase. Capacitor run. Capacitor start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Shunt Motor has disadvantage(s) of less expensive. constant speed. none of above. not suitable for rapidly changing loads. less expensive. constant speed. none of above. not suitable for rapidly changing loads. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hopkinson test is conducted under which of the following condition? half load full load no load any of the above half load full load no load any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generator will not build up voltage if field resistance is more than critical resistance. any one of above. if it has lost residual magnetism. due to wrong direction of rotation. if field resistance is more than critical resistance. any one of above. if it has lost residual magnetism. due to wrong direction of rotation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1080 1000 1203 1200 1080 1000 1203 1200 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the armature electric current is increased to double its previous value, and the time of commutation is halved, how will the reactance voltage vary? It will becomes four times. It will be doubled. It will remain the same. It will be halved. It will becomes four times. It will be doubled. It will remain the same. It will be halved. ANSWER DOWNLOAD EXAMIANS APP
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