DC Motors For constant torque drive which speed control method is preferred? Armature voltage control Mechanical loading system Field control Shunt armature control Armature voltage control Mechanical loading system Field control Shunt armature control ANSWER DOWNLOAD EXAMIANS APP
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 0.5 2.0 4.0 1.0 0.5 2.0 4.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors A compensating winding is an auxiliary winding embedded in slots in The pole faces of main poles Partly in pole faces, partly in armature None of the listed here The armature The pole faces of main poles Partly in pole faces, partly in armature None of the listed here The armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 15 HP Upto 10 HP Upto 20 HP Upto 5 HP Upto 15 HP Upto 10 HP Upto 20 HP Upto 5 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it None of the listed here Provides fine speed control Is simple in construction Is cheap None of the listed here Provides fine speed control Is simple in construction Is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following methods gives the greatest braking torque? None of the listed here Rheostatic braking Regenerative braking Plugging None of the listed here Rheostatic braking Regenerative braking Plugging ANSWER DOWNLOAD EXAMIANS APP
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