DC Motors In the dc motor the iron losses occur in Brushes Commutator Field Armature Brushes Commutator Field Armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Field copper loss None of these Armature copper loss Windage loss Field copper loss None of these Armature copper loss Windage loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc series motors are used in those applications where _____ is required. None of the listed here High starting torque Constant speed Low no load speed None of the listed here High starting torque Constant speed Low no load speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. None of the listed here Iron and friction losses Cu losses Field losses None of the listed here Iron and friction losses Cu losses Field losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which method of braking is generally used in elevators? Regenerative braking None of these Plugging Rheostat braking Regenerative braking None of these Plugging Rheostat braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will run at very slow speed Nothing will happen to the motor This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will run at very slow speed Nothing will happen to the motor This will make armature to take heavy current, possibly burning it ANSWER DOWNLOAD EXAMIANS APP
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