Electrical Machines The application that need frequent starting and stopping is jaw crushers. paper mills. blowers. lifts and hoists. jaw crushers. paper mills. blowers. lifts and hoists. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are the advantages of carbon brush over the copper brush? They are not hard as copper brush They are self lubricating in nature All of these In case of any sparking they will be less damaged than copper brushes They are not hard as copper brush They are self lubricating in nature All of these In case of any sparking they will be less damaged than copper brushes ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor requires 3 point starter? Series motor. Shunt, compound and series motor. Shunt motor as well as compound motors. Shunt motor. Series motor. Shunt, compound and series motor. Shunt motor as well as compound motors. Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A commutator in DC machines can 1. provide half-wave rectification 2. Provide full-wave rectification 3. convert ac to dc 4. Convert dc to ac 5. provide controlled full-wave rectification From these, the correct answer is 2, 3 ,5 2, 3, 4 1, 2, 3 2, 3, 4, 5 2, 3 ,5 2, 3, 4 1, 2, 3 2, 3, 4, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous condensers are used to All of these improve the power factor reduce hunting improve starting torque All of these improve the power factor reduce hunting improve starting torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load primary current in a transformer leads the applied voltage by exactly 90Â& lags behind applied voltage by exactly 90Â&am leads the applied voltage somewhat less than 90Ã& lags behind applied voltage somewhat less than 90à leads the applied voltage by exactly 90Â& lags behind applied voltage by exactly 90Â&am leads the applied voltage somewhat less than 90Ã& lags behind applied voltage somewhat less than 90à ANSWER DOWNLOAD EXAMIANS APP
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