NE CDL COMBINATION TEST - PRACTICE TEST
11.
If you discover a fire, before opening trailer doors you should:
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use the fire extinguisher on the doors.
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have a helper open the doors.
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feel the doors to see if they are hot.
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All of the above.
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12.
If driving a new vehicle, you should familiarize yourself with the controls and equipment:
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as you drive.
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before you start driving.
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after pulling into a service station.
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within the first 50 miles.
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13.
Dual tires:
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are dangerous.
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should not come in contact with each other.
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should always come in contact with each other.
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should come in contact with each other whenever possible.
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14.
Most heavy trucks with manual transmissions require ____ to change gears.
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single clutching
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double clutching
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triple clutching
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None of the above.
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15.
Under a pressurized system, the radiator cap:
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should never be removed until the system has cooled.
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should be removed when the coolant is hot.
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should never be hot.
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should always be cool.
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16.
When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
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100; 150
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50; 250
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50; 150
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150; 250
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17.
You are checking the tractor-trailer connection to make sure it is safe and secure. The landing gear should be:
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fully lowered.
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raised slightly off the ground.
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fully raised.
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None of the above.
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18.
Glad hands are used to:
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the air compressor is connected to the engine.
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connect the brakes from the truck or tractor to the trailer.
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connect the service and emergency air lines from the truck or tractor to the trailer.
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connect the electrical lines from the truck or tractor to the trailer.
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19.
When uncoupling a trailer, after shutting off the trailer air supply to lock the trailer brakes, you should:
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immediately apply your tractor parking brakes.
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inspect the trailer supports.
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back up gently to ease the pressure on the fifth-wheel locking jaws.
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pull the tractor forward until the fifth-wheel comes out from under the trailer.
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20.
You must check that all shut-off valves are in the open position except the ones:
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at the back of the last trailer.
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on the first trailer in a set of triples.
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on the first trailer in a set of doubles.
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on the middle trailer of a set of triples.
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