Deck 10: Brake System Principles

Question 1

The slight amount of brake pedal travel before the pushrod moves the pistons in the master cylinder is called .........

Answer 1

free play

Question 2

A ........proportioning valve is often used on larger passenger cars and light trucks to prevent rear wheel lockup during braking.

Answer 2

load-sensing

Question 3

Technician A says that DOT 3 brake fluid is petroleum based and can be mixed with DOT 4 and DOT 5 brake fluids.Technician B says DOT 5 brake fluid is silicone based and cannot be mixed with DOT 3 or DOT 4 brake fluids.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Answer 3

B

Question 4

Technician A says a leak in the hydraulic system will reduce pressure applied to the brake caliper or wheel cylinder pistons.Technician B says a leak in the hydraulic system will allow air to enter the system.Who is correct?

A)A .Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 5

All of the following are components of the brake hydraulic system except:

A)Wheel cylinder pistons
B)Brake hose and lines
C)Brake pads and shoes
D)Secondary master cylinder piston

Question 6

Technician A says the brake pedal pushrod pushes against the master cylinder primary piston.Technician B says the primary master cylinder piston is always larger than the secondary piston.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 7

Leverage, also called ........, is used to apply greater force to the master cylinder pistons than that applied solely by the driver.

Question 8

........refers to the science of using fluids to perform work.

Question 9

All of the following are advantages of regenerative brakes except:

A)Longer brake pad life
B)Decreased fuel economy
C)Decreased brake heat generation
D)None of the above

Question 10

A ........caliper has two or more pistons, and is mounted rigidly to the steering knuckle.