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External curves
External Curves for Students An external curve is a plot that shows the relationship between two or more variables. In this chapter, we will be discussin...
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External Curves for Students An external curve is a plot that shows the relationship between two or more variables. In this chapter, we will be discussin...
An external curve is a plot that shows the relationship between two or more variables. In this chapter, we will be discussing the DC generator, which is an electrical machine that converts mechanical energy into electrical energy.
An external curve can be drawn in various ways, but it typically consists of two or more graphs: voltage (V) vs. current (I) and torque (T) vs. angular position (θ).
Voltage and Current:
The voltage represents the amount of electrical potential energy stored in the generator's coil at a specific instant.
The current represents the amount of electrical charge flowing through the coil at that instant.
Torque and Angular Position:
The torque represents the amount of rotational force generated by the generator at a specific instant.
The angular position represents the angle that the generator's rotor has rotated at that instant.
The external curve helps us to visualize how these three variables are related to each other. By analyzing the shape and slope of the curve, we can understand how the generator converts mechanical energy into electrical energy