Iowa CDL Double 1 - DMV Written Test Questions with Answers - MCQGeeks.com

Q.1

Broken suspension parts:

Are not a cause for concern.
Are extremely dangerous.
Cannot be identified.

Q.2

When backing, you should:

Move quickly to get out of other drivers' ways.
Try not to use the mirrors.
Use a helper, if possible.

Q.3

Skids caused by over-acceleration can usually be resolved by:

Removing your foot from the accelerator.
Braking.
Swerving to the right.

Q.4

When traveling on a downgrade, your vehicle will:

Slow down.
Travel at the same rate as on level roadway.
Speed up.

Q.5

Driving at night is:

Safer than driving during the day.
Just as safe as driving during the day.
More dangerous than driving during the day.

Q.6

When trying to put out an electrical fire, you should:

Use water.
Use a B:C extinguisher.
Use an X extinguisher.

Q.7

If there is a fire in your vehicle and you are not sure how to extinguish it, you should:

Use a fire extinguisher.
Try douse the flames with water.
Move away from the flames and wait for the firefighters.

Q.8

On slippery roads, you should:

Accelerate and slow down frequently.
Adjust your driving to match weather conditions.
Tailgate other vehicles.

Q.9

When are people usually the least alert?

In the morning
In the early evening
Late at night

Q.10

To make a stop in a vehicle equipped with air brakes, the driver should:

Press the brake pedal down.
Lift the brake pedal up.
Pull out the air brake knob.

Q.11

In a double or triple combination, the ____ trailer should be directly behind the cab.

Lightest
Heaviest
Smallest

Q.12

A slack adjuster should move no more than ____ from where it is attached to the push rod.

Two inches
Five inches
One inch

Q.13

Using an Anti-Lock Braking System (ABS):

Is required in some states.
Shortens brake response time.
Provides additional control.

Q.14

A combination vehicle has ____ air line(s).

One
Two
Three

Q.15

On a slippery surface, stopping distance:

Is longer than on a regular driving surface.
Is not as long as on a regular driving surface.
Is about the same as on a regular driving surface.

Q.16

When operating a vehicle with a dual air brake system, the driver should:

Let the vehicle warm up before driving to ensure that the fuel reaches the engine.
Let the air compressor build up a minimum of 100 psi pressure in the primary and secondary systems before driving.
Begin driving just after the vehicle starts.

Q.17

Watching the road ahead of you:

Allows you time to make a plan to avoid an upcoming hazard.
Is not encouraged as it distracts you from driving.
Is only important when traveling in congested traffic.

Q.18

The leading factor resulting in death and injury in work zones is:

Speeding.
Stopping.
Under-inflated tires.

Q.19

Skids caused by acceleration can usually be resolved by:

Accelerating.
Removing your foot from the accelerator.
Coming to a complete stop.

Q.20

When it is difficult to see and you are traveling near other drivers, you should:

Use high beam lights.
Use low beam lights.
Use only the clearance lights.

0 h : 0 m : 1 s