New Hampshire CDL Combination 2 - DMV Written Test Questions with Answers - MCQGeeks.com

Q.1

What is another name for the service line?

The control line
The utility line
The open line
The parallel line

Q.2

Keeping cargo low can:

Prevent a rollover.
Help you drive faster.
Make turns more dangerous.

Q.3

What is a tractor protection valve?

A valve to keep air in the brake system should there be a bad leak
A valve that prevents the truck from being stolen
A valve that prevents the driver from going too fast
A valve that prevents the trailer from accidentally being released

Q.4

Trailers with low underneath clearance may be difficult to drive:

On interstate highways.
Over railroad crossings.
On dirt roads.
At the posted speed limit.

Q.5

The service air line is attached to the:

Relay valves.
Supply line.
Emergency air line.
Steering wheel.

Q.6

When lightly loaded, combination vehicles:

Should not be driven.
Have reduced braking capabilities.
Will not rollover.
Should be loaded with most of the weight in the rear of the trailer.

Q.7

Test the tractor protection valve by:

Removing the air supply knob.
Removing the parking brake control knob.
Releasing air with the brake pedal.
Releasing air with the gas pedal.

Q.8

In a sudden turn, the ____ trailer is the most likely to turn over.

Front
Last
Middle
First

Q.9

To control surge when stopping, you should not:

Keep a steady pressure on the brakes.
Brake well in advance of a stop.
Release the brakes too quickly.

Q.10

When coupling, after you've connected the air lines to the trailer, you should:

Supply air to the trailer.
Activate the emergency brake.
Disconnect the glad hands.

Q.11

Which of the following types of vehicles is most prone to the “crack-the-whip" effect?

An automobile
A three-axle tractor
A bobtail tractor
A triple combination

Q.12

To lower the risk of a rollover, you should:

Load the cargo as far forward as possible.
Load the cargo as far back as possible.
Load the cargo as low as possible.
Stack the cargo as high as possible.

Q.13

Compared to other commercial motor vehicles, combination vehicles need more space on the road because they are longer and they:

Need more space to turn and stop.
Drive more slowly.
Are twice the width.
Swerve more often.

Q.14

Simply changing lanes can cause:

A “crack-the-whip” effect, resulting in a rollover.
A trailer to straighten out.
Confusion over which lane the driver is hoping to use.
Other drivers to reduce their speed.

Q.15

The trailer hand valve should not be used while you are driving because:

It will disconnect from the vehicle.
You will stop the vehicle too quickly.
It can cause a skid.

Q.16

When the wheels of a trailer lock up:

The trailer will stay straight.
The trailer tends to swing around.
The cab will swing, but the trailer will stay straight.
They will likely go flat.

Q.17

To prevent a trailer from rolling over, you should:

Speed up when nearing a corner.
Make sudden steering moves.
Take on-ramps faster than the posted speed limit.
Drive slowly around corners.

Q.18

Having anti-lock brakes on only one axle:

Will not make a difference in braking.
Will provide increased control in braking.
Will likely cause the air brakes to malfunction.

Q.19

If the trailer begins to skid, it is best to:

Release the brakes.
Accelerate.
Quickly turn the steering wheel one way, then the other.
Brake.

Q.20

Trailers manufactured after ____ must be equipped with Anti-Lock Braking Systems (ABS).

1943
1998
2009
2015

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