A dc shunt motor is operating at no load. If the armature is shuntedby

1.	A dc shunt motor is operating at no load. If the armature is shuntedby a resistance, its speed will34.
Answer» The speed of any DC motor depends directly on its armature voltage and the strength of its magnetic field. The field winding in a shunt motor is in parallel with the armature winding and the DC supply. If the DC line voltage is constant, the armature voltage will be constant and thus the magnetic field strength will be constant. This consistency leads to a reasonably constant speed of operation. The speed does tend to drop with increasing load on the motor. This drop in speed is a result of resistive losses in the armature winding. Shunt motors with low armature winding resistance tend to have nearly constant speed of operation.

A dc shunt motor is operating at no load. If the armature is shuntedby a resistance, its speed will34.

Answer»

The speed of any DC motor depends directly on its armature voltage and the strength of its magnetic field. The field winding in a shunt motor is in parallel with the armature winding and the DC supply. If the DC line voltage is constant, the armature voltage will be constant and thus the magnetic field strength will be constant. This consistency leads to a reasonably constant speed of operation.

The speed does tend to drop with increasing load on the motor. This drop in speed is a result of resistive losses in the armature winding. Shunt motors with low armature winding resistance tend to have nearly constant speed of operation.

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