Sparking, is discouraged in a D.C. motor because

Related MCQs

• Sparking at the commutator of a D.C. motor may result in
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• By looking at which part of the motor, it can be easily confirmedthat a particular motor is D.C. motor?
• Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be
• If the field of a D.C. shunt motor gets opened while motor is running
• In case-the conditions for maximum power for a D.C. motor are established,the efficiency of the motor will be
• In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to
• For which of the following applications a D.C. motor is preferred over an A.C. motor?
• The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load.The speed regulation of the motor is
• In case the back e.m.f. and the speed of a D.C. motor are doubled, the torque developed by the motor will