FREE AND STUDY GAMES ABOUT ROBERT EXAM

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FREE AND STUDY GAMES ABOUT ROBERT EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -30 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Emergency stab braking is when you

Answer:

Brake as hard as you can, release the brake when the wheels lock, then put the brakes on again when the wheels start rolling.Question 2: Of the choices below, the first thing to do when a low air pressure warning light

comes on is:

Answer:

top and safely park as soon as possible Question 3: Air braking takes more time than hydraulic braking because air:

Answer:

Takes more time to flow through the lines than hydraulic fluid Question 4: If your vehicle has a alcohol evaporator, it is there to:

Answer:

Reduce the risk of ice in air brake valves in cold weather

Question 5: If the air compressor develops a leak, what keeps the air in the tanks?

Answer:

The one-way check valve Question 6: Modern air brake systems combine three different systems. The systems are the service, parking, and _____brake systems

Answer:

Emergency

Question 7: In air brake vehicles, the parking brakes should be used

Answer:

Any time the vehicle is parked Question 8: The brake system that applies and releases the brakes when the driver uses the brake pedal is the brake system

Answer:

Service Question 9: The most common type of foundation brake found on heavy vehicles is the

Answer:

S-cam drum brake Question 10: Your vehicle has a dual air brake system. If the low air pressure warning comes on

for the secondary system, you should:

Answer:

Bring the vehicle to a safe stop and continue only when the system is fixed.Question 11: Before driving a vehicle with a dual air system, allow time for the air compressor to build up to a minimum of ______ psi pressure in both primary and secondary systems.

Answer:

100 Question 12: If your vehicle has an alcohol evaporator, everyday during cold weather you

should:

Answer:

Check alcohol level and fill the evaporator if needed

Question 13: The brake pedal in an air brake system:

Answer:

Controls the air pressure applied to the brakes

Question 14: Your brakes are fading when

Answer:

You have to push harder on the brake pedal to control your speed on a downgrade Question 15: If your truck has dual parking control valves, you can use pressure from a

separate tank to:

Answer:

Release the spring emergency parking brakes to move a short distance Question 16: During normal driving, spring brakes are usually held back by:

Answer:

Air pressure Question 17: The braking power of the spring brakes:

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Depends on whether the service brakes are in adjustment Question 18: The air loss rate for a straight truck with the engine off and the brakes on should not be more than

Answer:

• psi in one minute

Question 19: 1If you must make a emergency stop, brake so you:

Answer:

Can steer and your vehicle stays in a straight line

Question 20: Why should you drain water from compressed air tanks?

Answer:

Water can freeze in cold weather and cause brake failure

Question 21: The application pressure gauge shows how much air pressure you:

Answer:

Are applying to the brakes Question 22: Which of the following makes total stopping distance longer for air brakes than for

hydraulic brakes:

Answer:

Brake lag Question 23: To check the free play of manual slack adjusters on s-cam brakes, you should park on

Answer:

Level ground, chock the wheels, and turn off the parking brakes Question 24: The air compressor governor controls:

Answer:

When air is pumped into the air tanks

Question 25: The supply pressure gauge shows how much pressure

Answer:

Is in the air tanks Question 26: The driver must be able to see a warning before air pressure in the service tanks fall below ___psi

Answer:

60 Question 27: A straight truck air brake system should not leak at a rate more than___ psi per minute with the engine off and the brakes released.

Answer:

2 Question 28: Total stopping distance for air brakes is longer than that for hydraulic brakes due to distance.

Answer:

Brake lag