DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To reduce eddy current loss To spread out flux for better uniformity To support the field coils To reduce the reluctance of the magnetic path To reduce eddy current loss To spread out flux for better uniformity To support the field coils To reduce the reluctance of the magnetic path ANSWER DOWNLOAD EXAMIANS APP
DC Motors In which of the following tests only one motor is required? Brake test Hopkinson's test Swinburne's test Field's test Brake test Hopkinson's test Swinburne's test Field's test ANSWER DOWNLOAD EXAMIANS APP
DC Motors The armature torque of the D.C. shunt motor is proportional to both (A) and (B) field flux only None of these armature current only both (A) and (B) field flux only None of these armature current only ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be Rated full-load current Less than full-load current Almost negligible More than full-load current Rated full-load current Less than full-load current Almost negligible More than full-load current ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thermistor Thyratron Thyristor Transistor Thermistor Thyratron Thyristor Transistor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor is preferred for operation in highly explosive atmosphere? Series motor Battery operated motor Air motor Shunt motor Series motor Battery operated motor Air motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
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