DMV CDL TEST 176 QUESTIONS WITH

DMV CDL TEST| 176 QUESTIONS| WITH

COMPLETE SOLUTIONS

You should know that brakes are fading when: correct answer: You have to push harder on the brake pedal to control your speed on a down grade.The brake system that applies the use of the brakes when the driver uses the brake is the: correct answer: Service brake system.The air compressor governor controls: correct answer: When air is pumped into the air tanks.If your truck's air compressor has its own oil supply. When

should you first check its oil level? correct answer: Before

driving.For air brake systems in good conditions the air compressor should start pumping at about: correct answer: 100 psi

If your vehicle has an alcohol evaporator, it is there to: correct

answer: Reduce the risk of ice in air brake valves in cold

weather.Some air brake systems have an alcohol evaporator. What will happen if you don't keep the unit filled with alcohol? correct

answer: Ice will form in the storage tanks and cause the brakes

to fail. 1 / 3

The safety valve is set automatically to reduce pressure at:

correct answer: 150 psi

The brake pedal in an air brake system: correct answer: Controls the air pressure applied to put on the brakes.Repeatedly presssing and releasing (fanning) the brake pedal may result in: correct answer: The loss of air pressure.The most common type of foundation brake found on heavy vehicle is the: correct answer: S-cam drum.S-cam: correct answer: Forces the brakes shoes against the inside of the brake drum.When the brakes are applied the brake shoes or linings are pressed against the: correct answer: Brake drums or disc.All air brake equipped vehicles have: correct answer: A supply pressure gauge.The application pressure gauge shows how much air pressure you: correct answer: Are applying to the brakes.Stop light switch: correct answer: Turns on the brake lights to warn drivers behind you.Under normal conditions in order to engage the parking brakes the driver must first: correct answer: Make sure the air brake system is fully pressurized. 2 / 3

The braking power of the spring brakes: correct answer: Depends on the service brakes being in adjustment.The parking or emergency brake on trucks and buses can only be held by: correct answer: Spring pressure

If the spring brakes are on you should push the brake pedal:

correct answer: Never

If your truck or bus has dual parking control valves, you can use pressure from a separate tank to: correct answer: Release the spring emergency/parking brakes to move a short distance.The driver must be able to see a warning before air pressure in the service air tanks falls below: correct answer: 60 P.S.I.The most important thing to do when the low air warning comes on: correct answer: Stop and safely park as soon as possible.Your vehicle has a dual air brake system. If a low air pressure

warning comes on for the secondary system; you should: correct

answer: Bring the vehicle to a safe stop and continue only when

the system is fixed.If your truck has a dual air system and one of the system is low pressure: correct answer: Either the front or.rear brakes will not be fully operational.

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