DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be Less than 50% 60 to 70 % 100 % 80 to 90 % Less than 50% 60 to 70 % 100 % 80 to 90 % 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 4.0 2.0 0.5 1.0 4.0 2.0 0.5 1.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thyristor Thyratron Transistor Thermistor Thyristor Thyratron Transistor Thermistor ANSWER DOWNLOAD EXAMIANS APP
DC Motors In case the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be Around 90% Anywhere between 75% and 90% Less than 50% 1 Around 90% Anywhere between 75% and 90% Less than 50% 1 ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors The running speed of a dc series motor is basically determined by Field excitation Load Armature reaction None of the listed here Field excitation Load Armature reaction None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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