OR CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
Which of the following is not a type of retarder?
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Pressure
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Electric
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Exhaust
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Hydraulic
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12.
In vehicles with air brakes, the air compressor governor:
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controls when the air compressor will pump air into the air storage tanks.
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controls when the air storage tanks will pump air into the air compressor.
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controls how much air the air compressor will pump into the air storage tanks.
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None of the above.
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13.
When a tire fails, you should:
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brake in a way that will keep your
vehicle in a straight line.
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stay off the brake.
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apply the brakes as hard as you can without locking the wheels.
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push the brake pedal down gradually.
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14.
The tire load for each tire is stated:
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on the inside of the tire.
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on the tread of the tire.
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on the side of the tire.
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on the vehicle's operator manual.
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15.
To prevent rollover, you should:
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drive slowly around corners.
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drive on the shoulder of the road when possible.
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drive in the left lane.
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turn the engine off while turning.
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16.
When driving double and triple trailers, drivers should:
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steer gently and go slowly around corners.
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look far ahead.
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allow more following distance.
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All of the above.
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17.
If the drive wheels begin to spin, you should:
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apply your brakes all the way.
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accelerate smoothly and change gears as necessary.
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take your foot off the accelerator.
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wait 4-5 seconds before applying the accelerator.
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18.
You should always try to back toward the driver's side because:
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you can more easily correct any steering errors.
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you can watch the rear of your vehicle out the side window.
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backing toward the left side is more dangerous.
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None of the above.
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19.
Rough acceleration can cause:
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damage electrical and brake lines.
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mechanical damage.
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tire damage.
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All of the above.
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20.
If your trucks has a high center of gravity, which of the following is true for curves?
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You should travel at the posted speed limit.
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You should slow down, as your truck can roll over at the posted speed limit for the curve.
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Reduce your speed to a crawl.
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None of the above.
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