A Thermostat Is Which Type of Control

question 7

Multiple Choice

A thermostat is which type of control?

• A) two-wire
• B) three-wire
• C) H-O-A
• D) jog

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Definitions:

Yoke

Any of a number of different fork-shaped components. Shift yokes (on shift rails) fit to dog clutches in a transmission to move them in and out of engagement. A pair of drive shaft yokes couple to each other using a U-joint as an intermediary.

Brinelling

Minor indentations on the shoulder or in the valley of a bearing race, usually caused by improper installation.

Spalling

Surface fatigue that occurs when chips, scales, or flakes of surface metal separate because of fatigue rather than wear.

Galling

A metal-to-metal wear failure characteristic caused by lack of lubricant or extreme overload.