2026 New Hampshire DMV Combination Class A Test 2 (20 Questions And Complete Answers)
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Terms in this set
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What is another name for the service line???
1. The control line
2. The utility line
3. The open line
4. The parallel line
1. The control line
2. The utility line
3. The open line
4. The parallel line
The control line
Keeping cargo low can..........
1. Prevent a rollover.
2. Help you drive faster.
3. Make turns more dangerous.
1. Prevent a rollover.
2. Help you drive faster.
3. Make turns more dangerous.
Prevent a rollover.
What is a tractor protection valve???
1. A valve to keep air in the brake system should there be a bad leak
2. A valve that prevents the truck from being stolen
3. A valve that prevents the trailer from accidentally being released
4. A valve that prevents the driver from going too fast
1. A valve to keep air in the brake system should there be a bad leak
2. A valve that prevents the truck from being stolen
3. A valve that prevents the trailer from accidentally being released
4. A valve that prevents the driver from going too fast
A valve to keep air in the brake system should there be a bad leak
Trailers with low underneath clearance may be difficult to drive:
1. On interstate highways.
2. Over railroad crossings.
3. On dirt roads.
4. At the posted speed limit.
1. On interstate highways.
2. Over railroad crossings.
3. On dirt roads.
4. At the posted speed limit.
Over railroad crossings.
The service air line is attached to the.....
1. Relay valves.
2. Supply line.
3. Emergency air line.
4. Steering wheel.
1. Relay valves.
2. Supply line.
3. Emergency air line.
4. Steering wheel.
Relay valves.
When lightly loaded, combination vehicles:
1. Should not be driven.
2. Have reduced braking capabilities.
3. Will not rollover.
4. Should be loaded with most of the weight in the rear of the trailer.
1. Should not be driven.
2. Have reduced braking capabilities.
3. Will not rollover.
4. Should be loaded with most of the weight in the rear of the trailer.
Have reduced braking capabilities.
Test the tractor protection valve by:
1. Removing the air supply knob.
2. Removing the parking brake control knob.
3. Releasing air with the brake pedal.
4. Releasing air with the gas pedal.
1. Removing the air supply knob.
2. Removing the parking brake control knob.
3. Releasing air with the brake pedal.
4. Releasing air with the gas pedal.
Releasing air with the brake pedal.
In a sudden turn, the ____ trailer is the most likely to turn over.
1. Front
2. Last
3. Middle
4. First
1. Front
2. Last
3. Middle
4. First
Last
To control surge when stopping, you should not:
1. Keep a steady pressure on the brakes.
2. Brake well in advance of a stop.
3. Release the brakes too quickly.
1. Keep a steady pressure on the brakes.
2. Brake well in advance of a stop.
3. Release the brakes too quickly.
Release the brakes too quickly.
When coupling, after you've connected the air lines to the trailer, you should:
1. Supply air to the trailer.
2. Activate the emergency brake.
3. Disconnect the glad hands.
1. Supply air to the trailer.
2. Activate the emergency brake.
3. Disconnect the glad hands.
Supply air to the trailer.
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