DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 1.0 2.0 0.5 4.0 1.0 2.0 0.5 4.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors The torque developed by a dc motor is directly proportional to Armature resistance × armature current Flux per pole × armature current None of the listed here Armature resistance × applied voltage Armature resistance × armature current Flux per pole × armature current None of the listed here Armature resistance × applied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors The dirction of rotation of a dc series motor can be changed by Either of Interchanging field or Interchanging supply Interchanging field terminals None of the listed here Interchanging supply terminals Either of Interchanging field or Interchanging supply Interchanging field terminals None of the listed here Interchanging supply terminals ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the field current increases When the armature current decreases When the armature current increases By interpoles When the field current increases When the armature current decreases When the armature current increases By interpoles ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ? Series motor Shunt motor Cumulative compound motor Differentially compound motor Series motor Shunt motor Cumulative compound motor Differentially compound motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. series motors are used None of these Where load changes frequently Where constant operating speed is needed Where load is constant None of these Where load changes frequently Where constant operating speed is needed Where load is constant ANSWER DOWNLOAD EXAMIANS APP
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