DC Motors Which method of braking is generally used in elevators? Rheostat braking Regenerative braking Plugging None of these Rheostat braking Regenerative braking Plugging None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors In case the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be Less than 50% Around 90% 1 Anywhere between 75% and 90% Less than 50% Around 90% 1 Anywhere between 75% and 90% ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be Almost negligible Rated full-load current More than full-load current Less than full-load current Almost negligible Rated full-load current More than full-load current Less than full-load current ANSWER DOWNLOAD EXAMIANS APP
DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. Field losses None of the listed here Iron and friction losses Cu losses Field losses None of the listed here Iron and friction losses Cu losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which motor should be used for centrifugal pumps? None of the listed here Either series or shunt Shunt motor Series motor None of the listed here Either series or shunt Shunt motor Series motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Loose coupling Worn bearings Dirt on the commutator Misaligment of machine Loose coupling Worn bearings Dirt on the commutator Misaligment of machine ANSWER DOWNLOAD EXAMIANS APP
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