DC Motors The speed of a dc motor can be controlled by changing All of the listed here Is flux Armature circuit resistance Aplied voltage All of the listed here Is flux Armature circuit resistance Aplied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 60 to 70 % Less than 50% 100 % 80 to 90 % 60 to 70 % Less than 50% 100 % 80 to 90 % ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed in a dc motor is maximum when back emf is equal to _____ the applied voltage. One-third None of the listed here Half Twice One-third None of the listed here Half Twice ANSWER DOWNLOAD EXAMIANS APP
DC Motors The plugging gives the Highest torque braking None of the listed here Zero torque braking Smallest torque braking Highest torque braking None of the listed here Zero torque braking Smallest torque braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors The starting resistance of a DC motor is generally Low 1000 Ω Infinitely large Around 500 Ω Low 1000 Ω Infinitely large Around 500 Ω ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it Is simple in construction Is cheap None of the listed here Provides fine speed control Is simple in construction Is cheap None of the listed here Provides fine speed control ANSWER DOWNLOAD EXAMIANS APP
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