2026 Connecticut DMV Combination Class A Test 1 (20 Questions And Complete Answers)
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Terms in this set
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When you are pulling a trailer, the air supply control lever should be in its ____ position.
1. Emergency
2. Supply
3. Normal
1. Emergency
2. Supply
3. Normal
Normal
A shut-off valve:
1. Is located on the front of a trailer.
2. Is located on the instrument panel.
3. Prevents air from escaping an air brake system.
4. Should always be open.
1. Is located on the front of a trailer.
2. Is located on the instrument panel.
3. Prevents air from escaping an air brake system.
4. Should always be open.
Prevents air from escaping an air brake system.
What is a bobtail tractor?
1. A tractor without a trailer
2. A tractor attached to two trailers
3. A tractor with a tank
1. A tractor without a trailer
2. A tractor attached to two trailers
3. A tractor with a tank
A tractor without a trailer
When glad hands are coupled, the seals should be pressed together at an angle of:
1. 30 degrees.
2. 45 degrees.
3. 60 degrees.
4. 90 degrees.
1. 30 degrees.
2. 45 degrees.
3. 60 degrees.
4. 90 degrees.
90 degrees.
A tractor protection valve is:
1. A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.
2. A device that prevents theft.
3. A device that controls fuel levels.
4. A device that allows the battery to recharge efficiently.
1. A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.
2. A device that prevents theft.
3. A device that controls fuel levels.
4. A device that allows the battery to recharge efficiently.
A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.
The easiest way to recognize that your trailer has begun to skid is to:
1. Ask another driver.
2. Use your mirrors to determine if the trailer has left the lane.
3. Release the brake pedal and then push it down again.
4. Watch the jackknife warning light on the control panel.
1. Ask another driver.
2. Use your mirrors to determine if the trailer has left the lane.
3. Release the brake pedal and then push it down again.
4. Watch the jackknife warning light on the control panel.
Use your mirrors to determine if the trailer has left the lane.
What happens when the wheels of a trailer lock up?
1. The trailer will often continue to move in a straight line.
2. The trailer may disengage.
3. The trailer may swing around.
4. Steering will become easier.
1. The trailer will often continue to move in a straight line.
2. The trailer may disengage.
3. The trailer may swing around.
4. Steering will become easier.
The trailer may swing around.
If a trailer begins to skid, the driver should:
1. Lock the brakes.
2. Release the brakes.
3. Steer in the opposite direction.
4. Accelerate.
1. Lock the brakes.
2. Release the brakes.
3. Steer in the opposite direction.
4. Accelerate.
Release the brakes.
When braking while pulling a trailer equipped with anti-lock brakes, you should:
1. Pump the brakes.
2. Use extra braking force to ensure the brakes kick in.
3. Brake as you would without anti-lock brakes.
1. Pump the brakes.
2. Use extra braking force to ensure the brakes kick in.
3. Brake as you would without anti-lock brakes.
Brake as you would without anti-lock brakes.
What does an Anti-Lock Braking System (ABS) do?
1. It allows a vehicle's wheels to lock up.
2. It prevents a vehicle's wheels from locking up.
3. It makes turning a vehicle easier.
1. It allows a vehicle's wheels to lock up.
2. It prevents a vehicle's wheels from locking up.
3. It makes turning a vehicle easier.
It prevents a vehicle's wheels from locking up.
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