MS CDL PRACTICE TEST - GENERAL KNOWLEDGE

11. Which of the following is true about high beams?
High beams should be used when it is safe and legal to do so.
Using them seriously cuts down on your ability to see ahead.
They should be used only if low beams suddenly stop working.
You should use them when you are not within 50 feet of an approaching vehicle.
12. When you double your speed from 20 to 40 mph, the braking distance:
is 4 times longer.
stays about the same.
increases slightly.
doubles.
13. Under a pressurized system, the radiator cap:
should never be hot.
should always be cool.
should be removed when the coolant is hot.
should never be removed until the system has cooled.
14. The safety relief valve is located:
in the front brake.
on the dashboard.
on each end of the vehicle's axles.
in the first tank the air compressor pumps air to.
15. _________ are used on many vehicles to provide extra gears.
Retarders and multi-speed rear axles
None of the other answers is correct.
Auxiliary transmissions and power steering cylinders
Multi-speed rear axles and auxiliary transmissions
16. When is it safe to remove the radiator cap?
It is always safe.
Whenever coolant has to be added to the system.
When you can touch the radiator cap with your bare hand.
As soon as you've stopped, as long as the engine is not hot.
17. Without engine oil:
traction will be reduced.
exhaust emissions will be reduced.
the ABS won't work.
the engine can be destroyed rapidly.
18. Which of the following could cause poisonous carbon monoxide to enter the cab?
Lack of engine coolant
Exhaust system leaks
Lack of engine oil
Wrong type of fuel
19. Which of these vehicles must come to a complete stop at railroad grade crossings?
School buses
Heavy equipment
Trucks carrying explosives
All of the above.
20. On a level surface:
wheel chocks make it easier for the vehicle to roll.
you should use wheel chocks to hold the vehicle.
wheel chocks should not be used when the brakes are very hot.
should never be used if the brakes are very wet.
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