AIR BRAKES PRACTICE TEST - MASSACHUSETTS
6.
When the spring brakes are on, you should never:
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push the brake pedal down.
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change lanes.
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decrease your speed.
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upshift.
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7.
After starting the engine, oil pressure should rise to a normal level:
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within 6 minutes.
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within 3 miles.
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within seconds.
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within 2 minutes.
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8.
Which of the following is a reason why air tanks must be drained?
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The governor may stop the compressor from pumping air.
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Your battery fluid may drain out.
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Your brakes may fail due to the water freezing.
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Your transmission fluid may drain out.
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9.
The s-cam forces the brake shoes away from one another and presses them against the inside of the brake drum. It is called the s-cam because:
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it is a safe-driving brake.
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it applies a "Shock" to the brakes.
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it is shaped like the letter "S".
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"S" stands for "Shoes".
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10.
An alcohol evaporator:
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used to reduce the chance of the front wheels skidding.
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is used to reduce the risk of ice in air brake valves and other parts during cold weather.
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protects the air brake system from too much pressure.
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to hold compressed air.
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