DC Motors The armature torque of the D.C. shunt motor is proportional to both (A) and (B) None of these field flux only armature current only both (A) and (B) None of these field flux only armature current only 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 In a dc compound machine, Both play equally dominant role Shunt field winding plays dominant role Series field winding plays dominant role Either can play dominant role Both play equally dominant role Shunt field winding plays dominant role Series field winding plays dominant role Either can play dominant role ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Starting torque All of these Full-load current Operating speed Starting torque All of these Full-load current Operating speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors Carbon brushes are preferable to copper brushes because _____ They reduce sparking They have lower resistance They have longer life They reduce armature reaction They reduce sparking They have lower resistance They have longer life They reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Motors By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor? Shaft Stator Commutator Frame Shaft Stator Commutator Frame ANSWER DOWNLOAD EXAMIANS APP
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