DC Motors In a dc machines the residual magnetism is of the order of 10 to 15 percent 20 to 25 percent 50 to 75 percent 2 to 3 percent 10 to 15 percent 20 to 25 percent 50 to 75 percent 2 to 3 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? C. series motor Reluctance motor Induction motor C. shunt motor C. series motor Reluctance motor Induction motor C. shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors In the dc motor the iron losses occur in Field Brushes Armature Commutator Field Brushes Armature Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors Differentially compound D.C. motors can find applications requiring Variable speed High starting torque Low starting torque Frequent on-off cycles Variable speed High starting torque Low starting torque Frequent on-off cycles ANSWER DOWNLOAD EXAMIANS APP
DC Motors Carbon brushes are preferable to copper brushes because _____ They reduce armature reaction They reduce sparking They have longer life They have lower resistance They reduce armature reaction They reduce sparking They have longer life They have lower resistance ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor has got maximum self loading property? Series motor Shunt motor Cumulatively compounded motor Differentially compounded motor Series motor Shunt motor Cumulatively compounded motor Differentially compounded motor ANSWER DOWNLOAD EXAMIANS APP
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