Which Statement About a Semiconductor Is Not Correct

question 84

Multiple Choice

Which statement about a semiconductor is not correct?

• A)Both electrons in the conduction band and holes in the valence band conduct electricity.
• B)The band gap becomes smaller with increasing temperature.
• C)The band gap is smaller than in an insulator.
• D)Adding an impurity can increase the conductivity.
• E)Conductivity increases with increasing temperature.

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Definitions:

Machine-Hours

A measure of production volume based on the total hours machines are run in the manufacturing process, often used to allocate overhead costs.

Departmental Predetermined Rates

The estimated overhead rates calculated for specific departments within a company to allocate costs appropriately.

Manufacturing Overhead

All indirect factory-related costs incurred during the production process, excluding direct materials and direct labor.

Machine-Hours

A measure of the amount of time machines are utilized during the production process.