DC Motors Which D.C. motor is generally preferred for cranes and hoists? Series motor Differentially compounded motor Cumulatively compounded motor Shunt motor Series motor Differentially compounded motor Cumulatively compounded motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit A resistance is connected in series with armature A resistance is connected parallel to the armature Armature is temporarily open circuited A high value resistor is connected across the field winding A resistance is connected in series with armature A resistance is connected parallel to the armature Armature is temporarily open circuited A high value resistor is connected across the field winding ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 10 to 15 percent 50 to 75 percent 2 to 3 percent 20 to 25 percent 10 to 15 percent 50 to 75 percent 2 to 3 percent 20 to 25 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a dc motor is to be selected for conveyors, which motor would be preferred? Cummulative compound motor Shunt motor Series motor Differentially compound motor Cummulative compound motor Shunt motor Series motor Differentially compound motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The rheostatic speed control method is very Economical Suitable for getting speeds above the normal Unsuitable for rapidly changing loads Efficient Economical Suitable for getting speeds above the normal Unsuitable for rapidly changing loads Efficient ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is most suitable for Pump Lathes Punch presses Cranes Pump Lathes Punch presses Cranes ANSWER DOWNLOAD EXAMIANS APP
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