DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? Induction motor C. series motor C. shunt motor Reluctance motor Induction motor C. series motor C. shunt motor Reluctance motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. Field losses None of the listed here Cu losses Iron and friction losses Field losses None of the listed here Cu losses Iron and friction losses 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 _____ Produce flat characteristics Decrease speed Reduce sparking Increase speed Produce flat characteristics Decrease speed Reduce sparking Increase speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is that which Has a poor torque Has almost constant speed Can be started easily without load Has its field winding consisting of thick wire and less turns Has a poor torque Has almost constant speed Can be started easily without load Has its field winding consisting of thick wire and less turns ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Misaligment of machine Dirt on the commutator Loose coupling Worn bearings Misaligment of machine Dirt on the commutator Loose coupling Worn bearings ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc compound machine, Both play equally dominant role Shunt field winding plays dominant role Either can play dominant role Series field winding plays dominant role Both play equally dominant role Shunt field winding plays dominant role Either can play dominant role Series field winding plays dominant role ANSWER DOWNLOAD EXAMIANS APP
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