The Inclusion of a Small Amount of Aluminum in a Crystal

question 25

Multiple Choice

The inclusion of a small amount of aluminum in a crystal of pure germanium yields what kind of semiconductor?

• A) an insulator
• B) an amorphous solid
• C) n-type, in which extra electrons carry the current
• D) p-type, in which a deficiency of electrons carries the current
• E) p-n-p type

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Definitions:

Allison TC10

A specific model of automatic transmission by Allison Transmission, designed for commercial vehicles.

Torque Converter

A fluid coupling consisting an impeller, stator, and turbine used to transmit driving torque from an engine to transmission; it provides continuously variable drive ratios and can multiply torque.

Countershafts

Secondary shafts in a gearbox that carry gears of various sizes, affecting the gear ratio between the input and output shafts.

Allison TC10

A model of automatic transmission for commercial vehicles, offering fuel efficiency and durability, designed by Allison Transmission.