Question 458Electricity & Electronics - Assistant Engineer

70% to pass

In a shunt wound DC motor, how is the shunt field connected?

AThe shunt field is wired in series with the armature, but in parallel with the commutating and compensating windings.
BThe shunt field is wired in parallel with the armature circuit, including armature, commutating, and compensating windings.
CThe shunt field is wired in series with the armature circuit, including armature, commutating, and compensating windings.
DThe shunt field is wired in parallel with the armature, but in series with the commutating and compensating windings.
AI Explanation

The correct answer is B) The shunt field is wired in parallel with the armature circuit, including armature, commutating, and compensating windings. In a shunt wound DC motor, the shunt field winding is connected in parallel with the armature circuit. This allows the shunt field to operate at a different current and voltage than the armature, providing independent control of the field and armature. Connecting the shunt field in parallel ensures that changes in the armature load do not significantly affect the field current and magnetic flux, which is important for maintaining stable motor performance. The other options are incorrect because they do not accurately describe the wiring configuration of the shunt field in a shunt wound DC motor.

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Official Resources
46 CFR Electrical Engineering 46 CFR Machinery & Electrical USCG National Maritime Center
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