Deck 10: Brake System Principles

Question 1

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

A)piston
B)fulcrum
C)pushrod
D)jack handle

Answer 1

A

Question 2

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?

A)A only
B)B only
C)both A and B
D)neither A nor B

Answer 2

A

Question 3

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

Answer 3

Calipers

Question 4

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

Question 5

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

Question 6

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

Question 7

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

A)proportioning valve
B)junction
C)metering valve
D)pressure differential valve

Question 8

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.

Question 9

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

Question 10

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

A)static
B)kinetic
C)both "static" and "kinetic"
D)neither "static" nor "kinetic"

Question 11

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

Question 12

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

Question 13

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?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 14

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:

A)10:1
B)5:1
C)3:1
D)1:1

Question 15

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

Question 16

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

Question 17

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

A)floating caliper
B)fixed caliper
C)combination valve
D)proportioning valve

Question 18

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

A)static
B)kinetic
C)heat
D)resistive

Question 19

All master cylinders are made of cast iron.

Question 20

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?

A)A only
B)B only
C)both A and B
D)neither A nor B