CDL GENERAL KNOWLEDGE TEST (IL) - PRACTICE TEST
41.
What should you do to test your hydraulic brakes for leaks?
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Pump the brake pedal three times, then apply pressure to the pedal and hold for five seconds.
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Hold the brake pedal down for five seconds, then pump it three times.
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Pump the brake pedal three times, then apply pressure for 9 seconds.
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Pump the brake pedal five times, then apply pressure for three seconds.
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42.
The weight of a truck:
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has no effect on stopping distance.
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is not as important as the vehicle's center of gravity in determining stopping distance.
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has an impact on stopping distance.
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None of the above.
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43.
Checking the automatic transmission fluid level may require:
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you to pump the brake.
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the 4-way emergency flashers to be activated.
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the engine to be running.
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the vehicle to be parked downhill.
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44.
If the safety relief valve in the air brake system releases air:
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something is wrong.
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the valve is fully operational.
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this will supply more power to the drive wheels.
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this will supply more power to the brakes.
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45.
Which of the following statements about cargo needing special attention is true?
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Overweight loads do not require special transit permits during daylight hours.
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Dry bulk tanks require special care because they have a high center of gravity.
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Hanging meat in a refrigerated truck is a very stable load with a low center of gravity.
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All of the above.
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46.
Dual tires:
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should not come in contact with each other.
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should always come in contact with each other.
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are dangerous.
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should come in contact with each other whenever possible.
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47.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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48.
Most heavy duty vehicles use ___ air brake systems for safety.
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dual
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reduced
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triple
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single
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49.
When starting your vehicle, the warning lights and buzzers:
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should stay on until you manually turn them off.
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should stay on for 15-20 seconds.
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should stay on for 2 minutes.
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should go out right away.
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50.
Which of the following is not a way to know when to change gears?
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Check that the pressure gauge shows normal oil pressure
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Use road speed (mph)
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Watch your tachometer
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Use engine speed (rpm)
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