DC Motors In a dc machines the residual magnetism is of the order of 2 to 3 percent 20 to 25 percent 50 to 75 percent 10 to 15 percent 2 to 3 percent 20 to 25 percent 50 to 75 percent 10 to 15 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to the motor Motor will run at very slow speed This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to the motor Motor will run at very slow speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor can be controlled by changing All of the listed here Armature circuit resistance Is flux Aplied voltage All of the listed here Armature circuit resistance Is flux Aplied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors The plugging gives the Highest torque braking Zero torque braking None of the listed here Smallest torque braking Highest torque braking Zero torque braking None of the listed here Smallest torque braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors The variable resistor shunting the field of a dc series motor is called a Armature divertor Field divertor Potential divider Voltage regulator Armature divertor Field divertor Potential divider Voltage regulator ANSWER DOWNLOAD EXAMIANS APP
DC Motors The torque developed by a dc motor is directly proportional to Armature resistance × applied voltage Armature resistance × armature current None of the listed here Flux per pole × armature current Armature resistance × applied voltage Armature resistance × armature current None of the listed here Flux per pole × armature current ANSWER DOWNLOAD EXAMIANS APP
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