AIR BRAKES CDL PRACTICE TEST - CONNECTICUT
16.
On front tires, tread should be at least:
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4/16 inch
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4/32 inch
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2/32 inch
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1/16 inch
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17.
Emergency brakes and parking brakes must be held on by:
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air pressure.
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hydraulic pressure.
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mechanical force.
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All of the above.
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18.
Axle weight is:
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the value specified by the manufacturer as the loaded weight of one axle.
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the weight transmitted to the ground by one axle or one set of axles.
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the maximum safe weight your tires can carry at a specified pressure.
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the weight of all the axles added together.
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19.
In vehicles with air brakes, 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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controls when the air compressor will pump air into the air storage tanks.
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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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20.
A dual air brake system:
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has a single air brake system, which uses two separate sets of brake controls.
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has a single air brake system, which uses a single set of brake controls.
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has two separate air brake systems, which use two separate sets of brake controls.
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has two separate air brake systems, which use a single set of brake controls.
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