DC Motors Compensating winding in a dc machine is placed On yoke in the pole faces On armature None of the listed here On yoke in the interpolar gap On yoke in the pole faces On armature None of the listed here On yoke in the interpolar gap ANSWER DOWNLOAD EXAMIANS APP
DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. Cu losses Field losses None of the listed here Iron and friction losses Cu losses Field losses None of the listed here Iron and friction losses 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 Armature is temporarily open circuited A high value resistor is connected across the field winding A resistance is connected in series with armature A resistance is connected parallel to the armature Armature is temporarily open circuited A high value resistor is connected across the field winding A resistance is connected in series with armature A resistance is connected parallel to the armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc series motors are used in those applications where _____ is required. Low no load speed Constant speed High starting torque None of the listed here Low no load speed Constant speed High starting torque None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. shunt motors as load is reduced The speed will remain almost/constant The speed will reduce The speed will increase abruptly The speed will increase in proportion to reduction in load The speed will remain almost/constant The speed will reduce The speed will increase abruptly The speed will increase in proportion to reduction in load ANSWER DOWNLOAD EXAMIANS APP
DC Motors The direction of rotation of a D.C. series motor can be changed by Either of (A) and (B) above None of these Interchanging field terminals Interchanging supply terminals Either of (A) and (B) above None of these Interchanging field terminals Interchanging supply terminals ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS