Which of the following DC motors has got maximum relieving property?
A. Shunt.
B. Series.
C. Differential compound.
D. Cummulative compound.
Show Answer
Answer: B
Share your understanding of this question with the correct explanation.
The DC motor that has the maximum relieving property is the Series motor.
Relieving property refers to the ability of a motor to reduce the torque load when the mechanical load decreases or is removed. In other words, it is the ability of the motor to “relieve” itself from the load and avoid excessive speed when the load decreases.
A Series motor is a type of DC motor where the field winding is connected in series with the armature winding. Series motors are known for their high starting torque and variable speed characteristics.
One of the notable properties of a Series motor is its maximum relieving property. When the mechanical load on a Series motor decreases, its speed tends to increase rapidly. This property is useful in applications where the load on the motor varies widely or needs to be adjusted quickly.
On the other hand, shunt motors, differential compound motors, and cumulative compound motors do not exhibit the same level of relieving property as Series motors. While these motors can also vary their speed, the speed response is not as pronounced or rapid as in Series motors.
Therefore, the correct answer is B: Series motor. The Series motor has the maximum relieving property among the options provided.