DC Motors The rheostatic speed control method is very Suitable for getting speeds above the normal Economical Efficient Unsuitable for rapidly changing loads Suitable for getting speeds above the normal Economical Efficient Unsuitable for rapidly changing loads ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Shunt armature control Armature voltage control Mechanical loading system Field control Shunt armature control Armature voltage control Mechanical loading system Field control ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Differentially compounded motor Series motor Shunt motor Cummulative compounded motor Differentially compounded motor Series motor Shunt motor Cummulative compounded motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. shunt motors as load is reduced The speed will increase abruptly The speed will remain almost/constant The speed will reduce The speed will increase in proportion to reduction in load The speed will increase abruptly The speed will remain almost/constant The speed will reduce The speed will increase in proportion to reduction in load 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 Can be used for 50°C ambient temperature also Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. motor Of higher H.P. should be selected Of lower H.P. should be selected Can be used for 50°C ambient temperature also Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The resistance of shunt field winding as compared to series field winding is Less None of the listed here More The same Less None of the listed here More The same ANSWER DOWNLOAD EXAMIANS APP
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