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Exam 10: Brake System Principles

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Question 1

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Brake line is made from ______.

A) seamless copper tubing
B) extruded copper clad aluminum tubing
C) double-wall steel tubing
D) steel-jacketed copper tubing

E) None of the above
F) C) and D)

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Question 2

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Hybrid and electric vehicles use __________ braking to capture energy typically lost during braking.

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Question 3

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A moving part that fits closely in a cylinder to either pressurize a liquid or compress a gas is a:

Brake fluid is hygroscopic, meaning that it readily absorbs moisture.

A ____________ contains the metering, proportioning, and pressure differential valves.

Left over brake fluid should be stored in a tightly sealed container for future use.

A brake pedal that applies 300 pounds of force to the pushrod with 100 pounds applied to the brake pedal pad has a ratio of:

The larger the vehicle is or the faster it moves, the more ______ energy is created.

All master cylinders are made of cast iron.

Usually the brake fluid ____________________ is attached to the top of the master cylinder.

A vehicle waiting at a stop light with the brakes applied is held in place by _____ friction.

While driving, static friction between the brake components slows the vehicle.

The brake system converts the vehicle's kinetic energy into ____________________ by slowing and stopping the vehicle's wheels.

Technician A says a metering valve is used to delay slightly the application of the front disc brakes..Technician B says a proportioning valve limits pressure to rear drum brakes to prevent lockup.Who is correct?

__________ and wheel cylinders are the outputs of the hydraulic system.

The ____________________ ____________________ is the hydraulic output for the drum brake system.

A __________ often connects a rubber brake hose to the steel lines at the rear suspension.

The pressure differential valve is used to turn on the brake warning light and shut off the part of the hydraulic system that has a leak.

The purpose of a pressure differential valve is being discussed.Technician A says it is used to close off one circuit in the event of pressure loss.Technician B says it provides the needed pressure balance between the front and rear brakes.Who is correct?

While discussing brake fluids, Technician A says hygroscopic brake fluid absorbs moisture from the air.Technician B says DOT 3 brake fluid has a higher boiling point than DOT 4 fluid.Who is correct?