DC Motors Ward-Leonard control is basically a Armature resistance control method Field control method Field divertor method Voltage control method Armature resistance control method Field control method Field divertor method Voltage control method ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Cummulative compounded motor Differentially compounded motor Series motor Shunt motor Cummulative compounded motor Differentially compounded motor Series motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the speed of a dc shunt motor is increased the back emf of the motor will Decrease Become zero Remains same Increase Decrease Become zero Remains same Increase ANSWER DOWNLOAD EXAMIANS APP
DC Motors As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit A high value resistor is connected across the field winding A resistance is connected parallel to the armature Armature is temporarily open circuited A resistance is connected in series with armature A high value resistor is connected across the field winding A resistance is connected parallel to the armature Armature is temporarily open circuited A resistance is connected in series with armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following application requires high starting torque? Centrifugal pump Air blower Locomotive Lathe machine Centrifugal pump Air blower Locomotive Lathe machine ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is 6.77% 2.22% 8.85% 4.76% 6.77% 2.22% 8.85% 4.76% ANSWER DOWNLOAD EXAMIANS APP
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