CDL PRACTICE TEST (MI) - GENERAL KNOWLEDGE TEST
21.
If the low air pressure warning light comes on, you should:
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stop immediately.
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continue to drive normally.
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call for help.
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22.
ABS:
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causes your wheels to lock when you break hard.
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gives you more control when you brake.
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is not required on newer trucks.
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23.
Glad hands are:
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coupling devices.
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warning devices.
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securement devices.
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24.
Hydroplaning:
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can occur only if there is a lot of water on the road.
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is less likely if tire pressure is low.
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can occur at speeds as low as 30 mph.
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25.
How can you avoid rolling back when you start your vehicle?
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Use stab braking before you engage the clutch.
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Partly engage the clutch before you take your right foot off the brake.
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Accelerate quickly so the vehicle does not jerk.
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26.
For an electrical equipment fire or a gasoline or oil fire, use:
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a type A:B:C or B:C fire extinguisher.
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a type B:C fire extinguisher only.
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water.
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27.
If you have convex mirrors, be aware that:
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everything appears smaller in a convex mirror than it would if you were looking at it directly.
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objects seem closer than they really are.
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in a convex mirror objects appears larger than they really are.
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28.
Which of the following is not a way to know when to change gears?
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Use road speed (mph)
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Check that the pressure gauge shows normal oil pressure
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Use engine speed (rpm)
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29.
When should you downshift automatic transmissions?
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When going around curves
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When going up steep grades
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When going down grades
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30.
To recognize when it's time to shift up to a higher gear, use:
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engine sounds and road signs.
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engine speed (rpm) and road signs.
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engine speed (rpm) and road speed (mph).
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