DC Motors D.C. series motors are used Where load changes frequently None of these Where load is constant Where constant operating speed is needed Where load changes frequently None of these Where load is constant Where constant operating speed is needed ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 80 to 90 % 100 % Less than 50% 60 to 70 % 80 to 90 % 100 % Less than 50% 60 to 70 % ANSWER DOWNLOAD EXAMIANS APP
DC Motors A three point starter is considered suitable for Shunt as well as compound motors All D.C. motors Shunt, compound and series motors Shunt motors Shunt as well as compound motors All D.C. motors Shunt, compound and series motors Shunt motors ANSWER DOWNLOAD EXAMIANS APP
DC Motors Compensating winding in a dc machine is placed On yoke in the interpolar gap On armature None of the listed here On yoke in the pole faces On yoke in the interpolar gap On armature None of the listed here On yoke in the pole faces ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Open armature coil Too much brush tension Worn bearings Bent shaft Open armature coil Too much brush tension Worn bearings Bent shaft ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Commutator End plates Pole shoes Rotor laminations Commutator End plates Pole shoes Rotor laminations ANSWER DOWNLOAD EXAMIANS APP
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