DC Motors A compensating winding is an auxiliary winding embedded in slots in Partly in pole faces, partly in armature The armature None of the listed here The pole faces of main poles Partly in pole faces, partly in armature The armature None of the listed here The pole faces of main poles ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased By interpoles When the armature current increases When the field current increases When the armature current decreases By interpoles When the armature current increases When the field current increases When the armature current decreases ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed in a dc motor is maximum when back emf is equal to _____ the applied voltage. Twice Half None of the listed here One-third Twice Half None of the listed here One-third ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Centrifugal pumps Steel rolling mills Elevators Colliery winders Centrifugal pumps Steel rolling mills Elevators Colliery winders ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to the motor Motor will run at very slow speed This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to the motor Motor will run at very slow speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors For starting a dc motor a starter is required because It starts the motor None of the listed here It limits the starting current to a safe value It limits the speed of the motor It starts the motor None of the listed here It limits the starting current to a safe value It limits the speed of the motor ANSWER DOWNLOAD EXAMIANS APP
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