DC CDL PRACTICE TEST - GENERAL KNOWLEDGE

41. If you experience a loss of hydraulic pressure, you should do all of the following except:
Use the parking brake
Downshift
Put the transmission in Neutral
Pump the brakes
42. When inspecting a vehicle's suspension, you should look for broken or missing leaves in the leaf springs.  If ____ or more are missing, it will put the vehicle out of service.
25%
15%
10%
50%
43. If the vehicle ahead of you is smaller than yours:
it will take the same amount of time to stop.
it will usually take longer to stop.
it can probably stop faster than you can.
All of the above.
44. When inspecting brakes, you should look for:
pads with oil, grease, or brake fluid on them.
shoes worn dangerously thin.
cracked drums.
All of the above.
45. Which of the following is not part of the air brake system?
Air storage tanks
Air filter
Air compressor
Alcohol evaporator
46. To maintain alertness while driving, you should:
keep cool by opening the window while eating heavy foods.
rely on caffeine.
take periodic breaks.
avoid short breaks and keep the window open.
47. You should downshift:
before starting down a hill or entering a curve.
before exiting a curve.
before starting up a hill.
None of the above.
48. Hydroplaning is most likely to occur:
when it's been raining for over an hour.
at speeds below 30 mph.
right after it starts to rain.
right before it starts to rain.
49. The most important reason you inspect your vehicle is:
because Federal and state laws require that drivers inspect their vehicles.
to avoid insurance premium hikes.
Safety.
Hygiene.
50. To correct a drive-wheel braking skid, you should:
release the clutch and press the accelerator at the same time, then countersteer.
steer into the skid.
stop braking and countersteer.
fully apply the brakes until you stop.
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