AIR BRAKES PRACTICE TEST - PENNSYLVANIA
21.
If a load is 10 feet long, the minimum number of tie-downs required is:
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2
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3
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4
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1
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22.
If your vehicle is hydroplaning, you should:
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release the accelerator and push in the clutch.
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accelerate to get through the water as quickly as possible.
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use the brakes to slow down.
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None of the above.
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23.
When is it safe to leave your vehicle unattended without applying the parking brakes or chocking the wheels?
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When the tank pressure falls to the "cut-in" pressure.
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Never.
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When you are conducting your pre-trip inspection.
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Only while you are taking a rest break.
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24.
Which of the following can cause brakes to fade or fail?
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Excessive use of the service brakes
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Not relying on the engine braking effect
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Brakes out of adjustment
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All of the above.
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25.
The air compressor governor:
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controls when the air storage tanks will pump air into the air compressor.
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stops the compressor from pumping air.
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allows the compressor to start pumping air when the tank pressure rises to the "cut-out" pressure.
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All of the above.
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