Question 459Electricity & Electronics - Assistant Engineer

The correct answer is A) The shunt-field coils are wound with many turns of very fine wire. This is correct because the shunt-field winding of a shunt-wound motor is designed to provide a constant magnetic field independent of the load on the motor. To achieve this, the shunt-field coils are wound with many turns of very fine wire, which allows for a high number of turns while maintaining a relatively low current through the winding. The other options are incorrect because B) and C) describe field windings that would not produce a constant magnetic field, and D) describes a field winding that would require much higher current to produce the same magnetic field strength as the correct answer.