Class E driver Georgia Questions and Answers Already Passed

Class E driver Georgia Questions and Answers Already Passed Modulating valve ✔✔Control handle on the dashboard that may be used to apply spring brakes gradually Some vehicles have a separate air tank can be used to r ...

Class E driver Georgia Questions and Answers Already Passed Modulating valve ✔✔Control handle on the dashboard that may be used to apply spring brakes gradually Some vehicles have a separate air tank can be used to release the ✔✔Spring brake You need at least what tread in the from tires and what thread I. Other tires ✔✔4/32inch in front 2/32inch in back Steering wheel play of what degree can make it hard to steer ✔✔10 degrees or two inches If more than one-forth or more leaf springs are leaking ✔✔It will put the vehicle out of service What warning devices for parked vehicles ✔✔Three reflective warning triangles, or 6fuses or 3 liquid burning flares Pressure build in three minutes and governor cutout ✔✔Pressure should build from 50psi to 90 psi in 3minutes. Governed cut out at 120-140psi Safety equipment ✔✔Spare electrical fuses unless be hicle has circuit breakers, three red reflective triangles or three red burning flares Oil pressure ✔✔5-20 psi Operating 35-75psi Testing for hydraulic leaks ✔✔Pump the break pedal three times then apply firm pressure and hold for 5 seconds the pedal should not move if it does something is wrong When should drivers inspect trucks and cargo? B ✔✔They must inspect the securement of cargo within the first 50 miles of a trip and every 150 miles or three hours whichever comes first Road speed ✔✔Mph Engine speed ✔✔Rpm Retarders ✔✔Help slow a vehicle Four basic types of Retarders ✔✔Exhaust,engine, hydraulic, and electric When should you turn the retarder off? ✔✔When your drive wheels have poor traction you should turn off it in icy snowy or wet conditions. How far should you look ahead ✔✔About 12-15 seconds at lower speeds about a block at higher speeds about a quarter mile When should mirror adjustment take place ✔✔Before the start of a trip when the trailers are straight What are curved mirrors called ✔✔Fisheye, spot, bugeye Turns ✔✔Signal early signal continuously and make sure you turn off your turn signal after the turn If you stop on any road you must put out your warning devices ✔✔Within ten minutes Two way street warning placement ✔✔100ft ahead 10ft back 100 ft back One way stree placement ✔✔10, 100, 200 ft back From the time your eyes see a hazard until your brain reacts to it ✔✔Perception distance average time is 1 3/4 seconds at 55mph it's 142feet Distance continued to travel before you physically hit brakes ✔✔Reaction distance 3/4-1second. At 55mph it's 61 feet average. Distance your vehicle will travel while braking. ✔✔Braking distance 55mph can take about 216 feet Total stopping distance ✔✔At 55mph your vehicle will have traveled 419 feet When you double your speed from 20 to 40 mph ✔✔The impact of four times greater the braking distance is four times longer When you triple your speed from 20 to 60 mph ✔✔The impact and braking distance is 9 times longer Increase speed to 80 mph ✔✔The impact and braking distance is 16 times greater than 20 mph Slippery surfaces ✔✔Reduce speed by 1/3 from about 55mph to 35mph on a wet road if snow by half of icy then to a crawl Hydroplaning can occur at ✔✔Speeds as low as 30mph if a lot of water The braking effect if greatest when ✔✔It is near the governed Rpms and the transmission is in lower gears What is the number one cause of injury and death in roadway work zones ✔✔Speeding traffic How many seconds do you need for each 10 feet of vehicle ✔✔1second per 10 feet unless going faster than 40 then add a second Two dangers in traveling next to others ✔✔Another driver may change lanes and suddenly turn into you and you may be trapped when you need to switch lanes Avoid blinding others ✔✔You should dim your lights within 500 feet of oncoming or when following another vehicle Inspecting tires in hot weather ✔✔Inspect the tired every two hours or every 100 miles in hot weather Passing crossing ✔✔No traffic control devices Active crossing ✔✔Has traffic control devices How long does it take a typical tractor trailer to cross a track? ✔✔At least 14 seconds and more than 15 for a double track You must use the braking effect of the engine ✔✔As the principle way of controlling your speed When going down grade you should ✔✔Shift the transmission to low gear What is not always the safest thing to do in an emergency ✔✔Stopping What do you not apply while turning? ✔✔Brakes When Avoiding a crash avoid using your brakes until it is going about ✔✔20mph Most brakes kept in good condition rarely fail. Most hydraulic brakes fail because of one of two reasons ✔✔Loss of hydraulic pressure Brake fade on long hills Anti lock braking system (abs) ✔✔Helps keep your vehicle under control during hard braking A skid if cause in one of four ways ✔✔Over braking, over steering, over acceleration, and driving too fast When a front wheel skids the only way to stop the skid is to ✔✔Let the vehicle slow down Basic steps to take at accident ✔✔Protect area notify authorities, care for injured You should distribute cargo ✔✔So it is as low as possible put the heaviest parts under the lowest parts The load limit of the securing article must be ✔✔At least one half times the weight of the article Too little weight on the driving axels can cause ✔✔Poor traction Cargo should have at least ✔✔Two tie downs and one tied own for each ten feet of cargo What is the cut out and cut in pressure for the Grovner of the air suppresses ✔✔125cut off 100 cut in What is set to open if the pressure in the air tanks exceed 150? ✔✔Pressure relief valves Foundation brakes are at each wheel what is the most common type of brake ✔✔S-cam drum brake Low pressure alarm comes on at ✔✔Below 60 psi or one half the compressed governor cutout pressure on older vehicles On large buses it is common for the low pressure alarm to go off at ✔✔80-85 psi What pumps air into the storage tanks/reservoirs? ✔✔Air compressee Compressed air usually has some water and some compressor oil in it which is bad for? ✔✔The air brake system If more than one-forth or more spring leaf is broke ✔✔Deadline the vehicle Tractor and straight truck spring breaks will come on fully when? ✔✔Air pressure drops to a range of 20-45psi(typically 20-30psi) Some vechicles such as buses have a separate air tank which can be used to release the ✔✔Spring brakes A duel air brake system has two separate air brake systems which use ✔✔A single set of brake controls Before driving a vehicle with a duel air system, allow time for the compressor to build up ✔✔To a minimum of 100psi pressure in both primary and secondary systems If a slack adjuster moves more than about one inch where the push rod attaches ✔✔It probably needs adjustment When engine is at operating Rpms, the pressure should build from 85-100psi within ✔✔45 seconds in dual air systems With a fully charged air system typically 125psi. Turn off the engine and release the parking brake and time the air pressure drop. ✔✔The loss rate should be less then two psi in one minute for single vehicles and less then three psi in one minute for combination The following two things will help you prevent rollover ✔✔Keep cargo as close to the ground as possible and drive slowly around turns Large combination vehicles take longer to stop when they are ✔✔Empty then when fully loaded The earliest and best way to recognize that the trailer has started to skid Is by ✔✔Seeing It in your mirrors When a vehicle goes around w corner the rear wheels ✔✔Follow a different path then the front wheels this is called off tracking or cheating If you cannot complete your turn without entering another traffic lane ✔✔Turn as wide as you complete the turn Try to back up with a trailer ✔✔In a straight line Trailer hand valve never use hand valve for parking because ✔✔All the air might leak out unlocking brakes What does the tractor protection valve do ✔✔Keeps air in the tractor or truck brake system should the trailer and break away or develop a bad leak The tractor protection valve the I'll close automatically if ✔✔Air pressure is low(range of 20- 45psi) Every combination has two air lines ✔✔The service line and the emergency line What are coupling devices used to connect the service and emergency air lines from the truck or tractor to the trailer ✔✔Glad hands