DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? Induction motor C. shunt motor Reluctance motor C. series motor Induction motor C. shunt motor Reluctance motor C. series motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor can be controlled by changing Armature circuit resistance All of the listed here Is flux Aplied voltage Armature circuit resistance All of the listed here Is flux Aplied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be Differentially compounded Under compounded Level compounded Cumulatively compounded Differentially compounded Under compounded Level compounded Cumulatively compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To reduce the generated emf To reduce the sparking To increase the generated emf To improve cooling To reduce the generated emf To reduce the sparking To increase the generated emf To improve cooling ANSWER DOWNLOAD EXAMIANS APP
DC Motors The direction of rotation of a D.C. series motor can be changed by Interchanging field terminals Either of (A) and (B) above Interchanging supply terminals None of these Interchanging field terminals Either of (A) and (B) above Interchanging supply terminals None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Too much brush tension Open armature coil Worn bearings Bent shaft Too much brush tension Open armature coil Worn bearings Bent shaft ANSWER DOWNLOAD EXAMIANS APP
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