Using the Information in the Table,develop the Four-Firm Concentration Ratio

question 193

Essay

Using the information in the table,develop the four-firm concentration ratio.Would you classify this industry as an oligopoly? Explain your answer. $$\begin{array} { c c } \text { Firm } & \begin{array} { c } \text { Annual Sales } \\\text { (\$ millions) }\end{array} \\\hline 1 & 350 \\2 & 200 \\3 & 150 \\4 & 100 \\5 & 40 \\6 \text { through 20 } & \underline { 20 } \\& 810\end{array}$$

---

Definitions:

Generator Power

The amount of electrical power, usually measured in watts (W) or kilowatts (kW), that a generator can produce.

Conductive Compensation

A method of connecting the compensating winding in a universal motor.

Compensating Winding

The winding embedded in the main field poles of a DC machine. The compensating winding is used to help overcome armature reaction.

Armature

The rotating part of an electric generator or motor that interacts with the magnetic field to produce or use electricity.