In the V curve shown in figure below for ___

Electrical Engineering MCQ Electrical Machines MCQ
1

In the V curve shown in figure below for a synchronous motor, the parameter of Y and X coordinates are, respectively

A. Torque and field current.
B. Armature current and field current.
C. Power factor and field current.
D. Armature current and torque.

Show Answer

Answer: B

Share your understanding of this question with the correct explanation.

2

The answer is B. Armature current and field current.

The V curve of a synchronous motor is a graph that shows the relationship between the armature current and the field current for a constant load. The V curve is typically shaped like a V, with the armature current on the Y-axis and the field current on the X-axis.

The V curve shows that the armature current decreases as the field current increases. This is because the increased field current creates a stronger magnetic field, which requires less current to flow through the armature windings to create the same torque.

The V curve is useful for determining the field current required to operate a synchronous motor at a desired load. The field current can be adjusted to increase or decrease the torque produced by the motor.

Here are some additional details about V curves:

  • They are used to determine the field current required to operate a synchronous motor at a desired load.
  • They show that the armature current decreases as the field current increases.
  • They are shaped like a V.

V curves are an important tool for understanding and operating synchronous motors.