DC Motors The greatest percentage of power loss in a dc motor is due to Copper loss Core loss Friction loss Windage loss Copper loss Core loss Friction loss Windage loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. motor Can be used for 50°C ambient temperature also Of higher H.P. should be selected Of lower H.P. should be selected Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. motor Can be used for 50°C ambient temperature also Of higher H.P. should be selected Of lower H.P. should be selected ANSWER DOWNLOAD EXAMIANS APP
DC Motors The armature voltage control of dc motor provides None of the listed here Constant torque drive Constant voltage drive Constant current drive None of the listed here Constant torque drive Constant voltage drive Constant current drive ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor is preferred for operation in highly explosive atmosphere? Air motor Shunt motor Battery operated motor Series motor Air motor Shunt motor Battery operated motor Series motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors ______ motors never use belt connected loads. Series Cummulative compounded Differentially compounded Shunt Series Cummulative compounded Differentially compounded Shunt ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Misaligment of machine Loose coupling Dirt on the commutator Worn bearings Misaligment of machine Loose coupling Dirt on the commutator Worn bearings ANSWER DOWNLOAD EXAMIANS APP
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