Chapter 43, Problem 1SQ

a.

To determine

Draw the diagram of series motor.

Explanation of Solution

DC motor:

A DC motor is an electrical rotary machine that is used to convert electrical power into mechanical energy.

Series motor:

In the series motor, the field winding and armature winding are connected in series. Since the field and armature winding are in series, it should be large enough to carry the current of the armature circuit. The diagram of series motor is shown in Figure 1. The series field winding is represented as ${\text{S}}_{\text{1}}$ and ${\text{S}}_2$, and the armature winding is represented as ${\text{A}}_{\text{1}}$ and ${\text{A}}_2$.

Conclusion:

Thus, the diagram of series motor is drawn.

b.

To determine

Draw the diagram of shunt motor.

Explanation of Solution

Shunt motor:

In the shunt motor, the field and armature winding are in parallel connection. The rheostat is connected in series with field winding to vary the resistance of field circuit. The diagram of shunt motor is shown in Figure 2. The shunt connected field winding is represented as ${\text{F}}_{\text{1}}$ and ${\text{F}}_2$.

Conclusion:

Thus, the diagram of shunt motor is drawn.

c.

To determine

Draw the diagram of compound motor.

Explanation of Solution

Compound motor:

The compound motor has both a series and shunt field winding. The diagram of compound motor is shown in Figure 3.

Conclusion:

Thus, the diagram of compound motor is drawn.