DC Motors In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to 50% of the previous value 25% of the previous value 100% of the previous value 10% of the previous value 50% of the previous value 25% of the previous value 100% of the previous value 10% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor is preferred for operation in highly explosive atmosphere? Air motor Battery operated motor Series motor Shunt motor Air motor Battery operated motor Series motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating pole winding is connected in Series-parallel with the armature Series with the armature Parallel with the armature None of the listed here Series-parallel with the armature Series with the armature Parallel with the armature None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors Carbon brushes are preferable to copper brushes because _____ They have longer life They have lower resistance They reduce armature reaction They reduce sparking They have longer life They have lower resistance They reduce armature reaction They reduce sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors The compensating winding is connected in Series-parallel with armature None of the listed here Parallel with armature Series with armature Series-parallel with armature None of the listed here Parallel with armature Series with armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors The torque developed by a dc motor is directly proportional to Armature resistance × armature current None of the listed here Armature resistance × applied voltage Flux per pole × armature current Armature resistance × armature current None of the listed here Armature resistance × applied voltage Flux per pole × armature current ANSWER DOWNLOAD EXAMIANS APP
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