DC Motors In which of the following tests only one motor is required? Field's test Hopkinson's test Swinburne's test Brake test Field's test Hopkinson's test Swinburne's test Brake test 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which method of braking is generally used in elevators? Rheostat braking Plugging None of these Regenerative braking Rheostat braking Plugging None of these Regenerative braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? Reluctance motor C. shunt motor Induction motor C. series motor Reluctance motor C. shunt motor Induction motor C. series motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The greatest percentage of power loss in a dc motor is due to Copper loss Windage loss Core loss Friction loss Copper loss Windage loss Core loss Friction loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor is generally preferred for cranes and hoists? Series motor Differentially compounded motor Shunt motor Cumulatively compounded motor Series motor Differentially compounded motor Shunt motor Cumulatively compounded motor ANSWER DOWNLOAD EXAMIANS APP
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