Group 1
. If the brake pedal is squishy (soft or spongy), there is a good chance that the hydraulic braking system has ________ in it and needs to be bled.
a.Oil
b.Water
c.Brake fluid
d.Air
Air
If a brake line is damaged, it is common practice to replace the entire brake line with a ________ rather than repair it.
a.Used replacement
b.Rubber replacement
c.Factory replacement
d.Rebuilt replacement
Factory replacement
Most modern master cylinder reservoirs are equipped with a low brake fluid float switch that turns on the _______ on the instrument panel and/or sets a notification on the driver information system.
a.Amber brake warning light
b.Yellow brake warning light
c.Red brake warning light
d.White brake warning light
Red brake warning light
The brake warning light is a single light located in the instrument panel, while the stop lights are made up of at least ______ lights at the rear of the vehicle.
a.Two
b.Three
c.Four
d.Five
Three
Brake pedals are covered with a(n) _______ nonslip cover to maintain sure footing.
a.Aluminum
b.Canvas
c.Rubber
d.Copper
Rubber
The pushrod transmits the brake pedal force directly to either the master cylinder or to the _______.
a.Parking brake
b.Power booster
c.Primary piston
d.Caliper assembly
Power Booster
Standard brake fluid is hygroscopic, which means it __________.
a.Has a high boiling point
b.Has a low boiling point
c.Readily absorbs water
d.Does not absorb water
Readily absorbs water
. ______ lights are used on vehicles as warning devices to warn drivers and others of specific conditions.
a.Red
b.Yellow
c.Flashing
d.White
Red
. The principle behind hydraulic brakes is ________, which states that pressure applied to a fluid in one part of a closed system will be transmitted without loss to all other areas of the system.
a.Kirchhoff's law
b.Newton's law
c.Pascal's law
d.None of the above
Pascal's law
The port that connects the reservoir to the cylinder, just barely ahead of the primary cup, is the:
a.Compensating port.
b.Inlet port.
c.Outlet port.
d.Primary port.
Compensating port.
The booster chambers are separated by a _______ diaphragm attached to the diaphragm plate.
a.Rigid steel
b.Rigid plastic
c.Flexible silicon
d.Flexible rubber
Flexible rubber
Technician A says that hydraulic braking systems use proportioning valves and metering valves. Technician B says that hydraulic braking systems use pressure differential valves or anti-lock hydraulic control units to modify hydraulic pressure. Who is correct?
a.Technician A
b.Technician B
c.Both Technician A and Technician B
d.Neither Technician A nor Technician B
Both Technician A and Technician B
In vehicles with an electronic brake proportioning function, the pressure reduction is handled electronically and can compensate for differences in traction by monitoring wheel _______.
a.Slip
b.Friction
c.Size
d.Pressure
Slip
The _______ uses hydraulic pressure from the power steering pump to increase the force that acts on the master cylinder.
a.Vacuum-assisted power booster
b.Hydraulic-assisted power booster
c.Individual wheel brake unit
d.Electrically assisted power booster
Hydraulic-assisted power booster
Different ________ designs can be engineered to alter the brake pedal effort required of the driver by using different levels of mechanical advantage.
a.Pad
b.Lever
c.Piston
d.Reservoir
Lever
Technician A says that quick take-up master cylinders use two additional pistons to move brake fluid faster. Technician B says that banjo fittings are commonly used to connect brake hoses to wheel brake units. Who is correct?
a.Technician A
b.Technician B
c.Both Technician A and Technician B
d.Neither Technician A nor Technician B
Technician B
For most of their length, brake lines are ________, coated to resist corrosion, and attached to the body with clips or brackets to minimize damage from vibration.
a.Triple-walled aluminum
b.Double-walled aluminum
c.Triple-walled steel
d.Double-walled steel
Double-walled steel
A _______ master cylinder is used in a typical anti-lock braking system.
a. Tandem
b. Single-piston
c. Non-piston
d. Triple-piston
Tandem
_______ carry brake fluid from the master cylinder to the brake units.
a.Double-walled steel lines
b.Rubber hoses
c.Double-walled steel lines and flexible hoses
d.Brake cables
Double-walled steel lines and flexible hoses
The valve that reduces rear brake pressure when the vehicle is lightly loaded and allows higher pressure when it is heavily loaded is a:
a.Load-sensitive proportioning valve.
b.Metering valve.
c.Pressure differential valve.
d.Combination valve.
Load-sensitive proportioning valve
. All of the following can turn on the red brake warning light EXCEPT:
a.The parking brake being engaged.
b.The brake fluid level being low.
c.The pressure being unequal in the brake system.
d.A defective stop lamp switch.
A defective stop lamp switch.
. The booster receives approximately ____ of vacuum from the intake manifold.
a.10"
b.15"
c.20"
d.25"
20"
This type of flare is sometimes called a bubble flare:
a.International Standards Organization (ISO) flare
b.Inverted double flare
c.Inverted single flare
d.Rounded flare
International Standards Organization (ISO) flare
A brake system metering valve:
a.Limits how much pressure can be applied to the front brakes to prevent them from locking up.
b.Senses a difference in hydraulic pressure and turns the brake warning light on.
c.Boosts the pressure to the front brakes during panic stops.
d.Is used to hold off the application of the front brakes on vehicles with rear drum brakes.
Is used to hold off the application of the front brakes on vehicles with rear drum brakes
Vacuum boosters consist of all of the following components EXCEPT _________.
a.An outer housing
b.One or two sealed diaphragms
c.A combination valve
d.A diaphragm return spring
A combination valve