DC Motors The direction of rotation of a D.C. series motor can be changed by Interchanging supply terminals Interchanging field terminals None of these Either of (A) and (B) above Interchanging supply terminals Interchanging field terminals None of these Either of (A) and (B) above ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor has got maximum self loading property? Series motor Cumulatively compounded motor Shunt motor Differentially compounded motor Series motor Cumulatively compounded motor Shunt motor Differentially compounded motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 1.0 2.0 0.5 4.0 1.0 2.0 0.5 4.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors The armature torque of the D.C. shunt motor is proportional to armature current only field flux only both (A) and (B) None of these armature current only field flux only both (A) and (B) None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating winding is basically used in a dc machine To reduce armature reaction To improve commutation To control the speed of machine None of the listed here To reduce armature reaction To improve commutation To control the speed of machine None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Worn bearings Open armature coil Bent shaft Too much brush tension Worn bearings Open armature coil Bent shaft Too much brush tension ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS