DOUBLES TRIPLES TEST ND - CDL PRACTICE TEST
11.
You should NOT use the parking brakes if:
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the brakes are too dry.
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the brakes are very hot.
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the brakes are cold.
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All of the above.
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12.
Fully loaded rigs:
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are less likely to roll over than empty rigs.
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are just as likely to roll over as empty rigs.
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are much more likely to roll over than empty rigs.
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None of the above.
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13.
If coolant has to be added to a system without a recovery tank, you should:
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keep the engine running while adding coolant.
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wait until the engine has cooled before adding coolant.
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never use thick cloth to touch the radiator cap.
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turn the radiator cap quickly to the first stop.
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14.
When coupling twin trailers, the more heavily loaded semitrailer should:
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be in the rear.
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have chocked wheels.
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have its brakes locked.
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be in first position behind the tractor.
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15.
Blocking and bracing are:
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used to keep cargo from sliding and to prevent movement of cargo.
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driving techniques used to regain control when your drive wheels start to skid.
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coupling devices used to connect the service air lines from the truck or tractor to the trailer.
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None of the above.
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16.
Containerized loads are used:
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when the cargo has been or will be carried by rail or ship.
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when transporting liquids.
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when transporting explosives.
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when the cargo exceeds the weight limit.
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17.
The trailer hand valve should:
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be used in driving.
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never be used to test the trailer brakes.
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never be used for parking.
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All of the above.
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18.
Rough acceleration can cause:
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mechanical damage.
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damage electrical and brake lines.
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tire damage.
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All of the above.
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19.
When you see you will need to slow down, you can warn drivers behind you by:
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tapping the brakes a few times.
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slamming on the brakes.
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turning on the right turn signal.
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making gestures.
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20.
If you unlock the pintle hook with the dolly still under the rear trailer:
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the dolly tow bar may fly up.
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your vehicle might roll away.
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steam and boiling water can spray under pressure.
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the brakes could be damaged by the combined forces of the springs and the air pressure.
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