Air Brake Sample Test A

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Air Brake Sample Test A

1. What are the three braking systems?
A The parking brake and emergency brake and thermal system
B The service brake and parking brake and emergency system.
C The service brake and emergency and the inverse system.

2. What is used to make the brakes work?
A Compressed Oxygen.
B Compressed Nitrogen.
C Compressed air.

3. What does the air compressor do?
A Pumps air into the air storage tanks.
B Keeps the tires inflated to proper pressure
C Comes on only if you have to make an emergency stop.

4. What does the air compressor governor control?
A It controls emergency warning systems.
B It controls when the compressor will pump air into the air storage tanks.
C It controls how the compressor will pump air into the air lines.

5. How much compressed air must the storage tanks hold?
A At least one hundred and twenty pounds of air.
B A maximum of one atmosphere.
C Enough air to allow brakes to be used when the air compressor stops working.

6. If oil and water collect in the air tanks what can happen to the brakes?
A The brakes can fail.
B Brake linings will automatically slip loose
C The brakes will work better.

7. No automatic tank drains - when should you drain the air tanks?
A Once a week.
B Once a month.
C Every day.

8. Where will you find the drain valve for each air tank?
A In the bottom of the tank.
B At the top of the tank.
C It is usually found above the tank.

9. What are the two types of air tank drains?
A Manually operated. . . Emergency.
B Automatic . . . Emergency
C Manually operated. . . Automatic.

10. What is a purpose of an alcohol evaporator?
A It takes alcohol from the air system.
B It reduces risk of ice in brake valves and other parts in cold weather.
C It is designed to save fuel in warm weather.



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