Question 1

On a disc/drum system, the rear drum brakes lock up when the brake pedal is pressed hard. Technician A says the proportioning valve may not be functioning. Technician B says the axle height valve may be out of adjustment. Who is correct?

Accepted Answer

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

Question 2

____________________ bleeding is performed on a master cylinder before it is installed on the vehicle.

Accepted Answer

The answer of ____________________ bleeding is performed on a master...

Question 3

______ friction is generated between the brake pads and rotors when the vehicle is descending a steep hill.

Accepted Answer

A) Static 
B) Kinetic 
C) Heat 
D) Resistive

Question 4

A proportioning valve reduces fluid pressure to ______.

Accepted Answer

A) the front brakes during initial brake (low pedal force)application 
B) the rear brakes during initial (low pedal force)brake application 
C) the front brakes during hard braking 
D) the rear brakes during hard braking

Question 5

Organic friction material _____ semimetallic materials.

Accepted Answer

A) is quieter than 
B) is more fade resistant than 
C) requires higher pedal pressure than 
D) wears out faster than

Question 6

When the brakes are applied while the vehicle is moving forward, the weight of the vehicle  shifts toward the rear wheels.

Accepted Answer

A) True 
 B)False

Question 7

Asbestos has not been used in brake linings or pads since 2003.

Accepted Answer

A) True 
 B)False

Question 8

If the front hydraulic circuit fails on a front/rear split brake system, the vehicle will lose 50 percent of its braking power.

Accepted Answer

A) True 
 B)False

Question 9

The upward movement of the rear suspension opens the ______.

Accepted Answer

A) residual pressure check valve 
B) metering valve 
C) height-sensing proportioning valve 
D) pressure differential valve

Question 10

List two ways of improving heat dissipation on a disc brake.

Accepted Answer

The answer of List two ways of improving heat dissipation...

Question 11

Residual check valves are found only on vehicles with rear disc brakes.

Accepted Answer

A) True 
 B)False

Question 12

The amount of pressure exerted by the brakes is being discussed. Technician A says short brake lines generate more pressure than long brake lines. Technician B says the condition of the piston seals in the master cylinder influences the amount of pressure developed. Who is correct?

Accepted Answer

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

Question 13

What is a tandem master cylinder?

Accepted Answer

The answer of What is a tandem master cylinder?...

Question 14

Which of the following is NOT a component of a typical dual master cylinder?

Accepted Answer

A) primary piston 
B) piston stop bolt 
C) pressure relief valve 
D) secondary cup

Question 15

Translucent plastic brake fluid reservoirs eliminate the need to remove the fluid caps during a complete brake system inspection.

Accepted Answer

A) True 
 B)False

Question 16

The brake system converts the momentum of the vehicle into ____________________.

Accepted Answer

The answer of The brake system converts the momentum of...

Question 17

A dual brake system uses a(n)____________________ master cylinder.

Accepted Answer

The answer of A dual brake system uses a(n)____________________ master...

Question 18

What is the function of the line printed along the length of a brake hose?

Accepted Answer

A) It indicates that the hose has a neoprene liner. 
B) It ensures that the hose is orientated outward, toward the wheel. 
C) It indicates whether the hose is twisted. 
D) It indicates that the hose is mounted on the left side.

Question 19

An metric bubble flare fitting may also be called a(n)____________________ fitting.

Accepted Answer

The answer of An metric bubble flare fitting may also...

Question 20

The power brakes in a vehicle are grabbing. Technician A checks for grease or oil on the brake shoe and pad linings. Technician B checks the fluid level in the master cylinder. Who is correct?

Accepted Answer

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

Exam 50: Brake Systems

On a disc/drum system, the rear drum brakes lock up when the brake pedal is pressed hard. Technician A says the proportioning valve may not be functioning. Technician B says the axle height valve may be out of adjustment. Who is correct?

____________________ bleeding is performed on a master cylinder before it is installed on the vehicle.

______ friction is generated between the brake pads and rotors when the vehicle is descending a steep hill.

A proportioning valve reduces fluid pressure to ______.

Organic friction material _____ semimetallic materials.

When the brakes are applied while the vehicle is moving forward, the weight of the vehicle shifts toward the rear wheels.

Asbestos has not been used in brake linings or pads since 2003.

If the front hydraulic circuit fails on a front/rear split brake system, the vehicle will lose 50 percent of its braking power.

The upward movement of the rear suspension opens the ______.

List two ways of improving heat dissipation on a disc brake.

Residual check valves are found only on vehicles with rear disc brakes.

The amount of pressure exerted by the brakes is being discussed. Technician A says short brake lines generate more pressure than long brake lines. Technician B says the condition of the piston seals in the master cylinder influences the amount of pressure developed. Who is correct?

What is a tandem master cylinder?

Which of the following is NOT a component of a typical dual master cylinder?

Translucent plastic brake fluid reservoirs eliminate the need to remove the fluid caps during a complete brake system inspection.

The brake system converts the momentum of the vehicle into ____________________.

A dual brake system uses a(n)____________________ master cylinder.

What is the function of the line printed along the length of a brake hose?

An metric bubble flare fitting may also be called a(n)____________________ fitting.

The power brakes in a vehicle are grabbing. Technician A checks for grease or oil on the brake shoe and pad linings. Technician B checks the fluid level in the master cylinder. Who is correct?