DC Motors In a dc motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to _____ Decrease speed Reduce sparking Increase speed Produce flat characteristics Decrease speed Reduce sparking Increase speed Produce flat characteristics ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 100 % 80 to 90 % 60 to 70 % Less than 50% 100 % 80 to 90 % 60 to 70 % Less than 50% ANSWER DOWNLOAD EXAMIANS APP
DC Motors By flux control method of speed control of a dc shunt motor, we can obtain speeds. Below the normal speed only Above as well as below the normal speed None of the listed here Above the normal speed only Below the normal speed only Above as well as below the normal speed None of the listed here Above the normal speed only ANSWER DOWNLOAD EXAMIANS APP
DC Motors The direction of rotation of a D.C. series motor can be changed by Interchanging supply terminals None of these Either of (A) and (B) above Interchanging field terminals Interchanging supply terminals None of these Either of (A) and (B) above Interchanging field terminals ANSWER DOWNLOAD EXAMIANS APP
DC Motors Motor starter are essential for Avoiding excessive starting current Preventing fuse blowing Starting the motor Accelerating the motor Avoiding excessive starting current Preventing fuse blowing Starting the motor Accelerating the motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The plugging gives the Smallest torque braking Zero torque braking None of the listed here Highest torque braking Smallest torque braking Zero torque braking None of the listed here Highest torque braking ANSWER DOWNLOAD EXAMIANS APP
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