DC Motors MCQ Multiple Choice Questions Answers - Page 3 for Practice

Correct Answer is: in both directions

Correct Answer is: to restrict armature current as there is no back e.m.f. while starting

Correct Answer is: armature current only

Correct Answer is: constant torque drive

Correct Answer is: constant torque drive

Correct Answer is: variable losses = constant losses

Correct Answer is: back e.m.f. = | x supply voltage

Correct Answer is: the torque required

Correct Answer is: interchanging field terminals

Correct Answer is: Rate of flow of ventilating air

Correct Answer is: armature copper loss

Correct Answer is: all of the above

Correct Answer is: 0.5

Correct Answer is: highest torque braking

Correct Answer is: the output power available at the shaft

Correct Answer is: stray losses

Correct Answer is: shunt motors

Correct Answer is: any of the above

Correct Answer is: inversely proportional to the armature current

Correct Answer is: increasing the resistance in field circuit

Correct Answer is: reducing the field current

Correct Answer is: decreasing the field current

Correct Answer is: 4.76%

Correct Answer is: low

Correct Answer is: 500 W

Correct Answer is: cumulative compound D.C. motor

Correct Answer is: electric traction

Correct Answer is: both shunt and compound motor

Correct Answer is: Ward Leonard control

Correct Answer is: all above factors