D.C. Motors

A. Torque and speed are inversely proportional to armature current
B. Torque is proportional to armature current
C. Torque is proportional to square root of armature current
D. The speed is inversely proportional to the torque and the torque is proportional to square of armature current

A. increase
B. decrease
C. remain same
D. become zero

A. D.C. shunt motor
B. D.C. series motor
C. Universal motor
D. Synchronous motor

A. regenerative
B. plugging
C. dynamic braking
D. none of the above
E. any of the above

A. of lower H.P. should be selected
B. of higher H.P. should be selected
C. can be used for 50°C ambient temperature also
D. is to be derated by a factor recommended by manufacturer and select the next higher H.P. motor

A. constant voltage drive
B. constant current drive
C. constant torque drive
D. none of the above

A. zero torque braking
B. smallest torque braking
C. highest torque braking
D. none of the above

A. torque will remain constant
B. torque will change but power will remain constant
C. torque and power both will change
D. torque, power and speed, all will change

A. Differentially compounded motor
B. Cumulatively compounded motor
C. Shunt motor
D. Series motor

A. independent of Ia
B. proportional to la
C. varies as (Ia)
D. varies as la