2026 Delaware DMV Air Brakes Class A Test 2 (25 Questions And Complete Answers)
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Terms in this set
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A wig wag is:
1. A low pressure warning device.
2. A tube that carries air to the brakes.
3. A type of air brake system.
1. A low pressure warning device.
2. A tube that carries air to the brakes.
3. A type of air brake system.
A low pressure warning device.
The brake pedal is part of which braking system?
1. The service brake system
2. The parking brake system
3. The emergency brake system
4. The auxiliary brake system
1. The service brake system
2. The parking brake system
3. The emergency brake system
4. The auxiliary brake system
The service brake system
If the safety relief valve in an air brake system is releasing air:
1. You should not be concerned as this is a normal process.
2. There is something wrong with the brakes.
3. The valve is operational.
1. You should not be concerned as this is a normal process.
2. There is something wrong with the brakes.
3. The valve is operational.
There is something wrong with the brakes.
An emergency brake must be controlled by:
1. Mechanical force.
2. Air pressure.
3. Gravity.
1. Mechanical force.
2. Air pressure.
3. Gravity.
Mechanical force.
A dual air brake system:'
1. Has a single air brake system, but uses two sets of controls.
2. Has one air brake system for each side of the truck.
3. Has two brakes for each wheel.
4. Has two separate air brake systems, but uses a single set of controls.
1. Has a single air brake system, but uses two sets of controls.
2. Has one air brake system for each side of the truck.
3. Has two brakes for each wheel.
4. Has two separate air brake systems, but uses a single set of controls.
Has two separate air brake systems, but uses a single set of controls.
A vehicle equipped with an Anti-Lock Braking System (ABS) uses a ____ light to warn that the system is not working properly.'
1. Green
2. Yellow
3. Orange
4. White
1. Green
2. Yellow
3. Orange
4. White
Yellow
Most heavy-duty vehicles use:'
1. Single air brake systems.
2. Dual air brake systems.
3. Triple air brake systems.
4. Quadruple air brake systems.
1. Single air brake systems.
2. Dual air brake systems.
3. Triple air brake systems.
4. Quadruple air brake systems.
Dual air brake systems.
During a static leakage test, the maximum leakage rate for a triple combination vehicle with air brakes is ____ in a minute.'
1. 3 psi
2. 5 psi
3. 7 psi
4. 9 psi
1. 3 psi
2. 5 psi
3. 7 psi
4. 9 psi
5 psi
How is the parking brake released?'
1. By tapping on the brake pedal three times
2. By pushing in the brake control knob
3. By engaging the accelerator
4. By tapping the accelerator twice
1. By tapping on the brake pedal three times
2. By pushing in the brake control knob
3. By engaging the accelerator
4. By tapping the accelerator twice
By pushing in the brake control knob
Failing to drain air tanks could result in:'
1. Water accumulations freezing and causing brake failure.
2. Squishy brakes.
3. Too much air collecting in the tanks.
1. Water accumulations freezing and causing brake failure.
2. Squishy brakes.
3. Too much air collecting in the tanks.
Water accumulations freezing and causing brake failure.
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