Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 115 V 200 V 230 V 460 V 115 V 200 V 230 V 460 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Sparkless commutation can be achieved by employing compensating winding. high resistance carbon brushes. inter poles. any one or more of the above methods. compensating winding. high resistance carbon brushes. inter poles. any one or more of the above methods. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer the magnetic coupling between the primary and secondary winding can be increased by using transformer oil of better quality. using the magnetic core of low reluctance. using soft material for winding. increasing the number of turns. using transformer oil of better quality. using the magnetic core of low reluctance. using soft material for winding. increasing the number of turns. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where low starting torque. high starting torque. less costly motor is not required. power factor is less. low starting torque. high starting torque. less costly motor is not required. power factor is less. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When an electric train is moving down a hill, the DC motor will operate as DC shunt generator. DC series generator. DC series motor. DC shunt motor. DC shunt generator. DC series generator. DC series motor. DC shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum flux density is constant, the eddy current losses are proportional to V f2 f V2 V f2 f V2 ANSWER DOWNLOAD EXAMIANS APP
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