A DC series motor is that which
A. Has a poor torque.
B. Has a almost constant speed.
C. Can be started easily without load.
D. Has its field winding consisting of thick wire and less turn.
Answer: D
Share your understanding of this question with the correct explanation.
A DC series motor is a motor that has its field winding consisting of thick wire and fewer turns.
In a DC series motor, the field winding is connected in series with the armature winding. The field winding is typically made up of a few turns of thick wire, which allows for high current flow through the winding. This configuration results in a strong magnetic field being produced when current passes through the field winding.
The use of thick wire and fewer turns in the field winding of a DC series motor helps in achieving a high magnetic field strength. This, in turn, contributes to the motor’s high starting torque and ability to handle heavy loads. The series connection of the field winding also allows for the armature current to flow through the field winding, further enhancing the magnetic field strength.
The other options provided in the answer choices are not correct:
A. A DC series motor typically has high starting torque, so it does not have a poor torque.
B. The speed of a DC series motor varies with the load, so it does not have an almost constant speed.
C. A DC series motor is generally started without load to avoid excessive speed, so it is not easily started with a load.
Therefore, the correct answer is D: Has its field winding consisting of thick wire and fewer turns. A DC series motor has its field winding made of thick wire and fewer turns to achieve a strong magnetic field and provide high starting torque and load-handling capabilities.