DC Motors D.C. generators are normally designed for maximum efficiency around All of these Full load Rated r.p.m. Rated voltage All of these Full load Rated r.p.m. Rated voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors During rheostat braking of dc series motor Motor is run at reduced speed Motor is run as a generator None of the listed here Motor is reversed in direction Motor is run at reduced speed Motor is run as a generator None of the listed here Motor is reversed in direction ANSWER DOWNLOAD EXAMIANS APP
DC Motors The value of back emf in dc motor is maximum at Half full load No load None of the listed here Full load Half full load No load None of the listed here Full load ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Starting torque All of these Full-load current Operating speed Starting torque All of these Full-load current Operating speed ANSWER DOWNLOAD EXAMIANS APP
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 reduce the reluctance of the magnetic path To support the field coils To spread out flux for better uniformity To reduce eddy current loss To reduce the reluctance of the magnetic path To support the field coils To spread out flux for better uniformity ANSWER DOWNLOAD EXAMIANS APP
DC Motors Small dc motors up to 5 HP usually have 6 poles 4 poles 2 poles 8 poles 6 poles 4 poles 2 poles 8 poles ANSWER DOWNLOAD EXAMIANS APP
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