DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 100 % 80 to 90 % 60 to 70 % Less than 50% 100 % 80 to 90 % 60 to 70 % Less than 50% ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc series motors are used in those applications where _____ is required. High starting torque Low no load speed Constant speed None of the listed here High starting torque Low no load speed Constant speed None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is High initial cost All of these High maintenance cost Low efficiency at high loads High initial cost All of these High maintenance cost Low efficiency at high loads ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating pole winding is connected in None of the listed here Series-parallel with the armature Parallel with the armature Series with the armature None of the listed here Series-parallel with the armature Parallel with the armature Series with the armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a dc motor is comnected across the AC supply it will Not run Run at lower speed Run at normal speed Burn due to heat produced in the field winding by eddy currents Not run Run at lower speed Run at normal speed Burn due to heat produced in the field winding by eddy currents ANSWER DOWNLOAD EXAMIANS APP
DC Motors ______ motor has the best speed regulation. Shunt Differentially compounded Series Cummulative compounded Shunt Differentially compounded Series Cummulative compounded ANSWER DOWNLOAD EXAMIANS APP
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