DC Motors The value of back emf in dc motor is maximum at No load None of the listed here Half full load Full load No load None of the listed here Half full load Full load 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. None of the listed here Half Twice One-third None of the listed here Half Twice One-third ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased By interpoles When the armature current increases When the armature current decreases When the field current increases By interpoles When the armature current increases When the armature current decreases When the field current increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is that which Can be started easily without load Has a poor torque Has its field winding consisting of thick wire and less turns Has almost constant speed Can be started easily without load Has a poor torque Has its field winding consisting of thick wire and less turns Has almost constant speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to _____ Decrease speed Increase speed Produce flat characteristics Reduce sparking Decrease speed Increase speed Produce flat characteristics Reduce sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following tests will be suitable for testing two similar D.C. series motors of large capacity? Hopkinson's test Swinburne's test Brake test Field test Hopkinson's test Swinburne's test Brake test Field test ANSWER DOWNLOAD EXAMIANS APP
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