DC Motors The main disadvantage of the Ward-Leonard control method is High initial cost All of these Low efficiency at high loads High maintenance cost High initial cost All of these Low efficiency at high loads High maintenance cost 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 lower H.P. should be selected Of higher 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 lower H.P. should be selected Of higher 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 Which method of braking is generally used in elevators? Rheostat braking Regenerative braking Plugging None of these Rheostat braking Regenerative braking Plugging None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors When two dc series motor are commected in parallel, the resultant speed is Zero More than the normal speed Normal speed Loss than the normal speed Zero More than the normal speed Normal speed Loss than the normal speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc series motors are used in those applications where _____ is required. Constant speed None of the listed here Low no load speed High starting torque Constant speed None of the listed here Low no load speed High starting torque ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is most suitable for Cranes Lathes Pump Punch presses Cranes Lathes Pump Punch presses ANSWER DOWNLOAD EXAMIANS APP
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