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Commercial Drivers Licence Online Practice Test - Exam 5

Date :  12 / 12 / 2017
        
Q1
During normal driving, spring brakes are usually held back by:




Q2
What is the purpose of an alcohol evaporator?



Q3
To check the free play of manual slack adjusters on s-cam brakes you should?




Q4
Air braking takes more time than hydraulic braking because air brakes:




Q5
The governor controls when the air compressor will pump into the air storage tanks.




Q6
What is a supply pressure gauge used for?




Q7
When driving down a long steep hill you should?




Q8
If you are away from your vehicle only a short time, you do not need to use the parking brake.




Q9
All vehicles with air brakes must have a low air pressure warning signal.




Q10
If oil and water collect in the air tanks what can happen to the brakes?




Q11
Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?




Q12
The parking brake applies and releases:




Q13
The air compressor governor controls:




Q14
The most common type of foundation brakes found on heavy vehicles is the:




Q15
Front wheel brakes are good under all conditions.




Q16
What do air brakes use to make the brakes work?




Q17
The braking power of the spring brakes:




Q18
How often should you drain air tanks?




Q19
Why should you be in the proper gear before starting down a hill?




Q20
When you put your brakes on the air brake system works with an electric switch, by air pressure to turn on the brake lights.




Minumum pass for the test is 75%
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Commercial Drivers Licence

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