NH CDL COMBINATION TEST - PRACTICE TEST
11.
If your brakes get wet, it can cause them:
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to apply unevenly.
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to be weak.
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to grab.
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All of the above.
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12.
As part of the final air brake check, you should:
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Test low pressure warning signal.
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Test air leakage rate.
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Check air compressor governor cut-in and cut-out pressure.
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All of the above.
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13.
With brake drums, if brakes become too hot:
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your ABS will malfunction.
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the air compressor will kick on to cool the brakes.
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the brakes may stop working.
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the brakes will supply too much power to the drive wheels.
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14.
To reduce the chance of rollover, you should:
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distributed the cargo as low as possible inside the trailer.
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place the cargo as high as possible inside the trailer.
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put the lightest parts of the cargo under the heaviest parts.
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None of the above.
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15.
Broken suspension parts can be very dangerous. When inspecting your vehicle for suspension system defects, look for:
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Damaged air suspension systems.
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Spring hangers that allow movement of axle from proper position.
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Broken leaves in a multi-leaf spring.
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All of the above.
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16.
Which of the following is NOT part of inspecting the coupling?
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Making sure there is no space between the upper and the lower fifth-wheel
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Checking that the locking lever is in the "lock" position
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Checking for enough clearance between the rear of the tractor frame and the landing gear.
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Making sure the fifth-wheel jaws have closed around the shank of the kingpin.
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17.
If the fifth-wheel locking lever is not locked after the jaws close around the kingpin:
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the parking brakes are on and your vehicle is safe to drive.
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the coupling is not right and you should not drive until you get it fixed.
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the parking brakes are on and the wheels are chocked.
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cargo is properly blocked.
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18.
Inspecting the fifth-wheel does NOT include:
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checking for missing or damaged parts.
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making sure that the fifth-wheel plate is greased as required.
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checking the area around the vehicle.
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ensuring the fifth wheel is in the proper position for coupling.
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19.
When checking the air and electric lines to the trailer, be sure that the air lines are properly connected to the gland hands, and are:
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properly greased.
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secured with enough slack for turns.
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secured with enough air leaks for turns.
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None of the above.
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20.
Most heavy-duty vehicles use:
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air brakes.
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hydraulic brakes.
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pressure brakes.
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solid brakes.
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