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Commercial Drivers Licence Online Practice Test - Exam 3

Date :  12 / 12 / 2017
        
Q1
You are traveling down a long, steep hill. Your brakes get so hot that they fail. What should you do?




Q2
What factors determine your selection of "safe" speed when going down a long steep downgrade?



Q3
Retarders keep you from skidding where the road is slippery.




Q4
Which of these statements about escape ramps is true?




Q5
To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 MPH on the shoulder. How should you move back onto the pavement?




Q6
Truck escape ramps:




Q7
During what time in your pre-trip inspection do you check the back emergency door? to insure it is closed




Q8
Tie downs must be of the proper type and strength. The combined strength of cargo tie downs must be strong enough to lift.




Q9
Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true?




Q10
Which fires can you use water to put out?




Q11
If your vehicle has an alcohol evaporator, it is there to:




Q12
The emergency brake system:



Q13
How can you check the slack adjuster?




Q14
Air brakes are really three different braking systems: service brake, parking brake and emergency brake.




Q15
What are the slack adjusters?




Q16
How can you test the low pressure warning signal?



Q17
If the air compressor should develop a leak, what keeps the air in the tanks?




Q18
When you put on the brakes by pushing down the brake pedal:




Q19
Should you ever leave your vehicle unattended without applying parking brakes or chocking the wheels?




Q20
Why must air tanks be drained?



Minumum pass for the test is 75%
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Commercial Drivers Licence

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