DC Motors In a dc motor constant torque is produced due to End plates Commutator Rotor laminations Pole shoes End plates Commutator Rotor laminations Pole shoes ANSWER DOWNLOAD EXAMIANS APP
DC Motors Three point starter can be used for Series motor only Shunt motor only Compound motor only Both shunt and compound motor Series motor only Shunt motor only Compound motor only Both shunt and compound motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is Directly proportional to flux per pole inversely proportional to flux per pole inversely proportional to applied voltage None of the listed here Directly proportional to flux per pole inversely proportional to flux per pole inversely proportional to applied voltage None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors By putting controller resistance in series with the armature of a dc motor, we can obtain speeds Above as well as below the normal speed Above the normal speed only Below the normal speed only None of the listed here Above as well as below the normal speed Above the normal speed only Below the normal speed only None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 60 to 70 % 100 % 80 to 90 % Less than 50% 60 to 70 % 100 % 80 to 90 % Less than 50% ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Open armature coil Bent shaft Too much brush tension Worn bearings Open armature coil Bent shaft Too much brush tension Worn bearings ANSWER DOWNLOAD EXAMIANS APP
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