DMV CDL TEST QUESTIONS AND ANSWERS ALREADY PASSED

DMV CDL TEST QUESTIONS AND ANSWERS ALREADY PASSED You should know that brakes are fading when: ✔✔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: ✔✔Service brake s ystem. The air compressor governor controls: ✔✔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? ✔✔Before driving. For air brake systems in good conditions the air compressor should start pumping at about: ✔✔100 psi If your vehicle has an alcohol evaporator, it is there to: ✔✔Reduce the risk of ice in air brake valves in cold weather. Some air brake systems have an a lcohol evaporator. What will happen if you don't keep the unit filled with alcohol? ✔✔Ice will form in the storage tanks and cause the brakes to fail. The safety valve is set automatically to reduce pressure at: ✔✔150 psi The brake pedal in an air brake system: ✔✔Controls the air pressure applied to put on the brakes. Repeatedly presssing and releasing (fanning) the brake pedal may result in: ✔✔The loss of air pressure. The most common type of foundation brake found on heavy vehicle is the: ✔✔S-cam drum . S-cam: ✔✔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: ✔✔Brake drums or disc. All air brake equipped vehicles have: ✔✔A supply pressure gauge. The applica tion pressure gauge shows how much air pressure you: ✔✔Are applying to the brakes. Stop light switch: ✔✔Turns on the brake lights to warn drivers behind you . Under normal conditions in order to engage the parking brakes the driver must first: ✔✔Make sure the air brake system is fully pressurized. The braking power of the spring brakes: ✔✔Depends on the service brakes being in adjustment. The parking or emerge ncy brake on trucks and buses can only be held by: ✔✔Spring pressure If the spring brakes are on you should push the brake pedal: ✔✔Never If your truck or bus has dual parking control valves, you can use pressure from a separate tank to: ✔✔Release the sp ring emergency/parking brakes to move a short distance.