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Single-unit air brakes practice quiz

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Single-unit air brakesQuestion 24 of 200
Correct25%6 of 24 answered
Incorrect75%18 of 24 answered

What does Type 30 mean for a regular brake chamber?

AIt has 30 inches of pushrod travel.Your answer
BIt is used only above 30 psi.
CIts diaphragm has 30 square inches of effective area.Correct answer
Incorrect.

A Type 30 chamber has 30 square inches of effective diaphragm area. (Guide p. 149)

Study aid only. These are not official ICBC exam questions, and practice scores do not predict an official test result.