Electrical Machines Hopkinson test is conducted under which of the following condition? any of the above no load half load full load any of the above no load half load full load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An alternator is feeding an infinite busbar. Its prime mover is suddenly shutdown. The alternator will come to stand still. start working as induction motor. continue to work as alternator but the direction of rotation will reverse. continue to work as synchronous motor with same direction of rotation. come to stand still. start working as induction motor. continue to work as alternator but the direction of rotation will reverse. continue to work as synchronous motor with same direction of rotation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, if the supply voltage and frequency are reduced by the same ratio, then slip at which maximum torque occurs is more and maximum torque remains constant less and maximum torque decreases less and maximum torque increases more and maximum torque decreases more and maximum torque remains constant less and maximum torque decreases less and maximum torque increases more and maximum torque decreases ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For which of the following loads, armature reaction is magnetizing in nature? pure resistive load pure capacitive load pure inductive load None of these pure resistive load pure capacitive load pure inductive load None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ratio of starting torque to full load torque is minimum in Shunt motor. Series motor. Differential compound motor. Cumulative compound motor. Shunt motor. Series motor. Differential compound motor. Cumulative compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For larger units high torque it is preferred to use Universal motor. DC shunt motor. Slip induction motor. Partial motor. Universal motor. DC shunt motor. Slip induction motor. Partial motor. ANSWER DOWNLOAD EXAMIANS APP
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