The speed of a D.C. shunt motor more than its full-load speed can be obtained by
A)decreasing the field current
B)increasing the field current
C)decreasing the armature current
D)increasing the armature current

Question

Quizplus · Accepted Answer

Decreasing the field current in a DC shunt motor weakens the magnetic field, which in turn increases the speed of the motor beyond its full-load speed. This is because the speed of a DC motor is inversely proportional to the magnetic flux (which is generated by the field current).

The Speed of a D