COMBINATION
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | Always use the lowest reverse gear
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| show | Normal position
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| The fifth wheel locking lever is not locked after the jaws have closed around the kingpin. This means that: | show 🗑
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| Off-tracking or cheating causes which of these to follow the wider pass while making a turn? | show 🗑
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| show | Red, blue
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| The air leakage rate for a combination vehicle(engine off, brakes on) should be less than____psi per minute: | show 🗑
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| show | More
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| show | Fully loaded
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| When you get ready to back under a semitrailer, you should line up: | show 🗑
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| show | Open
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| show | Emergency
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| When coupling, the proper position of the fifth wheel is: | show 🗑
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| What gear should the tractor be in after you uncouple the trailer and are inspecting the trailer supports? | show 🗑
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| show | Fully raised with the crank handle secured in its bracket
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| show | Over the locking lever
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| After you supply air to the trailer, make sure the air lines are not crossed and the trailer brakes are working. This is done by: | show 🗑
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| Before you back under a trailer, make sure that: | show 🗑
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| When you are uncoupling a loaded trailer, you should lower the landing gear until it: | show 🗑
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| What will happen if the air lines are crossed when you hook up to an old trailer? | show 🗑
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| To stop a trailer skid: | show 🗑
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| Why should you be sure the fifth wheel plate is greased as required? | show 🗑
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| Your emergency air line breaks or gets pulled apart while driving. The loss of pressure will cause the: | show 🗑
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| When connecting the glad hands, press the two coupler rubber seals together at what angle to each other? | show 🗑
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| show | Bobtail tractors can take longer to stop than a combination vehicle loaded to maximum gross weight
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| show | Low gear
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| You supply air to the trailer tanks by: | show 🗑
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| show | The shank
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| How much space should be allowed between the upper and lower fifth wheel after coupling? | show 🗑
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| show | At normal pressure
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| show | Supply air to the system then pull out the air supply knob
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| show | 3
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| The safest way to make a turn without entering another traffic lane is to: | show 🗑
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| The higher the center of gravity of your truck, the: | show 🗑
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| The hand valve should be used: | show 🗑
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| show | Back valve
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| show | The emergency and service air lines
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| Why should you lock the tractor glad hands to each other or to a dummy coupler when you are not towing a trailer? | show 🗑
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| While driving behind another vehicle under good conditions you should allow at least one second between your vehicle and the vehicle ahead for each____(how many) feet of your vehicle length? | show 🗑
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| show | Service and emergency air lines from the vehicle to the trailer
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| You are about to back your tractor under a semitrailer. The trailer is at the right height when: | show 🗑
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| While checking if the trailer is securely coupled to the trailer, the landing gear should be: | show 🗑
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| show | Secured, but with enough loop to turn
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| show | Pulling the tractor forward gently with the trailer brakes locked
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| The front trailer supports are up and the trailer is resting on the tractor. Make sure: | show 🗑
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| show | Back up gently to ease pressure on the fifth wheel
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| Air brake equipped trailers made before 1975: | show 🗑
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| When checking the trailer emergency brakes the tractor protection valve should be placed in what position? | show 🗑
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| You are driving a combination vehicle when the trailer breaks away, pulling apart both air lines. You expect the trailer emergency brakes to come on and: | show 🗑
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| In normal driving, some drivers use the hand valve before the brake pedal to prevent a jack-knife. Which of the statements is true? | show 🗑
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| show | Never
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| When performing a pre-trip inspection and looking into the fifth wheel gap, you should: | show 🗑
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| show | Must be evacuated
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| At a passive railroad crossing, the decision to proceed: | show 🗑
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| show | walk through the bus to check for any remaining students
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| How should you test the tractor-semitrailer connection for security? | show 🗑
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| If taking the driving test and the route does not include a railroad crossing, you: | show 🗑
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| show | A Supply air to the trailer system, then pull out the air supply knob.
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| If you cannot complete your turn without entering another traffic lane you should: | show 🗑
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| show | A Trailer tank pressure to be lost.
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| show | A Nothing is likely to happen until you try to apply the brakes
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| Where should the tractor be when you inspect the landing gear after uncoupling the trailer? | show 🗑
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| show | (1) go slow around turns
(2) keep the cargo as close to the ground as possible
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Created by:
kok777
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