DC Motors The commutating winding is basically used in a dc machine None of the listed here To improve commutation To reduce armature reaction To control the speed of machine None of the listed here To improve commutation To reduce armature reaction To control the speed of machine ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it Provides fine speed control None of the listed here Is simple in construction Is cheap Provides fine speed control None of the listed here Is simple in construction Is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is that which Has almost constant speed Has a poor torque Has its field winding consisting of thick wire and less turns Can be started easily without load Has almost constant speed Has a poor torque Has its field winding consisting of thick wire and less turns Can be started easily without load ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the armature of a D.C. motor rotates, e.m.f. induced is Back e.m.f. None of these Mutually induced e.m.f. Self-induced e.m.f. Back e.m.f. None of these Mutually induced e.m.f. Self-induced e.m.f. ANSWER DOWNLOAD EXAMIANS APP
DC Motors The armature voltage control of dc motor provides Constant torque drive Constant voltage drive Constant current drive None of the listed here Constant torque drive Constant voltage drive Constant current drive None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a dc motor is comnected across the AC supply it will 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 Run at normal speed Run at lower speed Not run ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS