DMV CDL TEST 100% CORRECT

DMV CDL TEST 100% CORRECT You should know that brakes are fading when: - Correct Answer️️ -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 Answer️️ -Service brake system. The air compressor governor controls: - Correct Answer️️ -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 Answer️️ -Before driving. For air brake systems in good conditions the air compressor should start pumping at about: - Correct Answer️️ -100 psi If your vehicle has an alcohol evaporator, it is there to: - Correct Answer️️ -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 Answer️️ -Ice will form in the storage tanks and cause the brakes to fail. The safety valve is set automatically to reduce pressure at: - Correct Answer️️ -150 psi The brake pedal in an air brake system: - Correct Answer️️ -Controls the air pressure applied to put on the brakes. Repeatedly presssing and releasing (fanning) the brake pedal may result in: - Correct Answer️️ -The loss of air pressure. The most common type of foundation brake found on heavy vehicle is the: - Correct Answer️️ -S-cam drum. S-cam: - Correct Answer️️ -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 Answer️️ -Brake drums or disc. All air brake equipped vehicles have: - Correct Answer️️ -A supply pressure gauge. The application pressure gauge shows how much air pressure you: - Correct Answer️️ -Are applying to the brakes. Stop light switch: - Correct Answer️️ -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 Answer️️ -Make sure the air brake system is fully pressurized. The braking power of the spring brakes: - Correct Answer️️ -Depends on the service brakes being in adjustment. The parking or emergency brake on trucks and buses can only be held by: - Correct Answer️️ -Spring pressure If the spring brakes are on you should push the brake pedal: - Correct Answer️️ - Never If your truck or bus has dual parking control valves, you can use pressure from a separate tank to: - Correct Answer️️ -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 Answer️️ -60 P.S.I. The most important thing to do when the low air warning comes on: - Correct Answer️️ -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 Answer️️ -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 pressur