DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? Induction motor Reluctance motor C. shunt motor C. series motor Induction motor Reluctance motor C. shunt motor C. series motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The power mentioned on the name plate of an electric motor indicates The power drawn in kVA The power drawn in kW The gross power The output power available at the shaft The power drawn in kVA The power drawn in kW The gross power The output power available at the shaft ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. shunt motors as load is reduced The speed will remain almost/constant The speed will increase abruptly The speed will increase in proportion to reduction in load The speed will reduce The speed will remain almost/constant The speed will increase abruptly The speed will increase in proportion to reduction in load The speed will reduce ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is High maintenance cost Low efficiency at high loads High initial cost All of these High maintenance cost Low efficiency at high loads High initial cost All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Armature voltage control Mechanical loading system Field control Shunt armature control Armature voltage control Mechanical loading system Field control Shunt armature control ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 100 % 60 to 70 % Less than 50% 80 to 90 % 100 % 60 to 70 % Less than 50% 80 to 90 % ANSWER DOWNLOAD EXAMIANS APP
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