DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. Cu losses Iron and friction losses None of the listed here Field losses Cu losses Iron and friction losses None of the listed here Field losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a dc motor is comnected across the AC supply it will Run at normal speed Run at lower speed Not run Burn due to heat produced in the field winding by eddy currents Run at normal speed Run at lower speed Not run Burn due to heat produced in the field winding by eddy currents ANSWER DOWNLOAD EXAMIANS APP
DC Motors ______ motors never use belt connected loads. Series Shunt Cummulative compounded Differentially compounded Series Shunt Cummulative compounded Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is Directly proportional to flux per pole None of the listed here inversely proportional to flux per pole inversely proportional to applied voltage Directly proportional to flux per pole None of the listed here inversely proportional to flux per pole inversely proportional to applied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? Wide speed range High starting torque Stability Low cost Wide speed range High starting torque Stability Low cost ANSWER DOWNLOAD EXAMIANS APP
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