DC Motors The commutating winding is basically used in a dc machine None of the listed here To control the speed of machine To improve commutation To reduce armature reaction None of the listed here To control the speed of machine To improve commutation To reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is best suited for driving Shear and punches Cranes and hoists Machine tools None of the listed here Shear and punches Cranes and hoists Machine tools None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc machines the residual magnetism is of the order of 50 to 75 percent 2 to 3 percent 20 to 25 percent 10 to 15 percent 50 to 75 percent 2 to 3 percent 20 to 25 percent 10 to 15 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking Regenerative None of these Dynamic braking Plugging Regenerative None of these Dynamic braking Plugging ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor has got maximum self loading property? Differentially compounded motor Series motor Shunt motor Cumulatively compounded motor Differentially compounded motor Series motor Shunt motor Cumulatively compounded motor 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 4.76% 6.77% 8.85% 2.22% 4.76% 6.77% 8.85% 2.22% ANSWER DOWNLOAD EXAMIANS APP
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