Take Kansas CDL Air Brakes Test 2

QUESTION 1 / 25

The air storage tanks:

Choose one answer below.

AHold only enough air for one braking cycle.✓BHold enough air for brakes to be used several times if the compressor stops working.✓CDo not hold air unless there is an emergency.✓DHold enough air for more than 1,000 braking cycles.✓

QUESTION 2 / 25

Air tank drains:

Choose one answer below.

AAllow rain water to enter the tank.✓BAre used to drain water and compressor oil from the air tank.✓CShould never be opened.✓DMust remain open during transit.✓

QUESTION 3 / 25

What do anti-lock brakes do?

Choose one answer below.

AHelp a driver avoid wheel lockup✓BLock up the front wheels✓CPrevent a vehicle from accelerating while traveling uphill✓DPrevent a vehicle from accelerating while traveling downhill✓

QUESTION 4 / 25

The parking brake should be:

Choose one answer below.

AUsed whenever you park your vehicle.✓BUsed while driving.✓CSet when driving in bad weather.✓DRemoved.✓

QUESTION 5 / 25

Vehicles with dual air brake systems:

Choose one answer below.

AMaintain full-capacity air pressure in the braking systems even when the vehicle is not running.✓BMaintain some air pressure in the braking systems when the vehicle is not running.✓CMust be run to build enough air pressure to brakes to operate properly.✓DDo not need time to build air pressure before a trip.✓

QUESTION 6 / 25

Test the low pressure warning signal:

Choose one answer below.

AOnce a month.✓BOnce a week.✓CTwice a week.✓DBefore every trip.✓

QUESTION 7 / 25

When the brake pedal is pushed down, air brakes work:

Choose one answer below.

AImmediately.✓BAfter a short delay.✓CAfter about a minute.✓DOnly if it is warm outside.✓

QUESTION 8 / 25

In cold weather, an alcohol evaporator should be checked and filled:

Choose one answer below.

AOnce a week.✓BEvery day.✓CEvery hour.✓DOnce a month.✓

QUESTION 9 / 25

How is the parking brake released?

Choose one answer below.

ABy tapping on the brake pedal three times✓BBy pushing in the brake control knob✓CBy engaging the accelerator✓DBy tapping the accelerator twice✓

QUESTION 10 / 25

To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:

Choose one answer below.

ASet the control to normal.✓BSet the control to the off position.✓CSet the control to neutral.✓DKeep the control at the halfway mark.✓

QUESTION 11 / 25

Brakes may get out of adjustment:

Choose one answer below.

AIf they are too hot.✓BIn colder weather.✓CIf they are used.✓DIf they get wet.✓

QUESTION 12 / 25

Pressing and releasing a brake pedal unnecessarily can:

Choose one answer below.

ARelease air faster than it can be replaced.✓BAdd more air to the braking system.✓CMake the brake pedal more sensitive.✓DCreate a loud noise.✓

QUESTION 13 / 25

On a truck with air brakes, the braking system’s air compressor:

Choose one answer below.

APumps air into the air storage tanks.✓BFills the tires.✓CMoves air to the back of the truck.✓DCleans the brakes.✓

QUESTION 14 / 25

What can happen if a parking brake is used in very wet weather when temperatures are below freezing?

Choose one answer below.

AThe brakes will squeak.✓BThe brakes may freeze so the vehicle cannot move.✓CThe brakes may suddenly release by themselves.✓DThe brakes may explode.✓

QUESTION 15 / 25

During an applied leakage test, the maximum leakage rate for a triple combination vehicle is:

Choose one answer below.

A10 psi in a minute.✓B8 psi in a minute.✓C6 psi in a minute.✓D4 psi in a minute.✓

QUESTION 16 / 25

Most heavy-duty vehicles use:

Choose one answer below.

ASingle air brake systems.✓BDual air brake systems.✓CTriple air brake systems.✓DQuadruple air brake systems.✓

QUESTION 17 / 25

To use the stab braking method in an emergency situation, you should:

Choose one answer below.

AApply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.✓BApply the brakes about halfway, but keep the wheels rolling.✓CFully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops.✓DApply the emergency brake.✓

QUESTION 18 / 25

A modulating control valve can control the:

Choose one answer below.

ASpring brakes.✓BLanding gear.✓CAir brakes.✓DAnti-lock braking system (ABS).✓

QUESTION 19 / 25

When using the controlled braking method in an emergency situation, you should:

Choose one answer below.

AApply the brakes as hard as possible without locking the wheels.✓BApply the brakes with about half of your usual force.✓CApply the brakes so the wheels lock.✓DApply the brakes with minimal pressure.✓

QUESTION 20 / 25

What can happen if the air pressure gets too low in an air brake system?

Choose one answer below.

AThe brakes may squeak.✓BThe brakes may not work.✓CThe brakes may be sluggish.✓DThe brakes will be very sensitive.✓

QUESTION 21 / 25

The air compressor governor controls:

Choose one answer below.

AWhen the air compressor pumps air into the air storage tanks.✓BHow fast air is pumped into the air storage tanks.✓CThe temperature of air pumped into the air storage tanks.✓DThe speed of the vehicle.✓

QUESTION 22 / 25

During a static leakage test, the maximum leakage rate for a single vehicle with air brakes is ____ in one minute.

Choose one answer below.

A1 psi✓B2 psi✓C3 psi✓D4 psi✓

QUESTION 23 / 25

When only the tractor is equipped with an Anti-Lock Braking System (ABS):

Choose one answer below.

AThere is a decreased risk of jackknifing.✓BThere is an increased risk of jackknifing.✓CThe brakes will not work as effectively as they would without ABS.✓DThe brakes will become more sensitive.✓

QUESTION 24 / 25

Emergency brakes:

Choose one answer below.

AAre not required on trucks.✓BAre only required on trailers.✓CAre required on tractors.✓DAre optional.✓

QUESTION 25 / 25

Truck tractors with air brakes that were built on or after March 1, 1997 are equipped with:

Choose one answer below.

AAn extra set of brakes.✓BVoice-activated brakes.✓CCruise control.✓DAnti-Lock Braking Systems (ABS).✓