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Is not recommended on vehicles with air brakes.
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Is required on vehicles with air brakes.
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Is optional on vehicles with air brakes.
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Nevada CDL Permit Test - Air Brakes
(From the 2021 Nevada CDL driver handbook)
| Number of questions: | 25 |
| Passing score: | 20 |
Directions:
This endorsement is required for driving a vehicle with air brakes. To receive this endorsement, applicants must pass a written test. The test consists of 25 multiple choice questions. Each question has three or four answer choices. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the Nevada Commercial Driver License Manual. Questions come from the chapter covering: Air Brakes. The Air Brakes endorsement may be used with the Class A, B or C CDL.
Passing grade —
5 or fewer errors
advertising
1.
A low air pressure warning signal:
2.
The two markings on a front brake limiting valve usually read:
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"Normal" and "slippery."
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"Low" and "high."
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"Left" and "right."
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3.
A one-way check valve:
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Drains the water and compressor oil from the air tanks.
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Prevents air from escaping if the air compressor has a leak.
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Activates the emergency brakes when there is a leak.
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Holds the spring brakes in position until they are used.
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4.
During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.
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One half
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One quarter
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One third
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One tenth
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5.
Brake linings should be:
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Loose.
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Free of oil.
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Soft.
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6.
Air pressure should build up in a single air system within:
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15 minutes.
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12 minutes.
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Three minutes.
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