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Union Pacific Air Brakes Practice Test
Practice mode
Question
1
of 25
QUESTION 1 / 25
What precaution is essential when using air brakes on a downhill grade?
Choose one answer below.
A
Use only emergency brakes
✓
B
Adjust the braking pressure periodically
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C
Turn off the air brake system
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D
Increase speed while braking
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QUESTION 2 / 25
What component is responsible for generating the compressed air in the air brake system?
Choose one answer below.
A
Air tank
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B
Brake valve
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C
Air compressor
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D
Power unit
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QUESTION 3 / 25
How many types of couplers are in use on UPRR?
Choose one answer below.
A
One
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B
Two
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C
Three
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D
Four
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QUESTION 4 / 25
What is the role of the brake pipe in the air brake system?
Choose one answer below.
A
To supply power to the locomotive
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B
To distribute compressed air to the entire train
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C
To regulate the speed of the train
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D
To monitor brake temperatures
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QUESTION 5 / 25
What three methods are used to determine the air pressure at the rear of a train?
Choose one answer below.
A
Manual gauge and pressure chart
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B
Accurate gauge, E.O.T., and a distributed power locomotive
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C
Wireless pressure monitors only
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D
Backup cameras and gauges
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QUESTION 6 / 25
What should you check during a pre-trip inspection of the air brake system?
Choose one answer below.
A
For fuel leaks only
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B
For air leaks, proper pressure levels, and condition of brake components
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C
For oil levels and battery charge
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D
For tire pressure and wheel alignment
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QUESTION 7 / 25
What could excessive delays in braking indicate?
Choose one answer below.
A
Optimal system performance
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B
Possible air leaks or ineffective brake components
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C
Normal operation under challenging conditions
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D
Proper system adjustments
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QUESTION 8 / 25
What test could be conducted instead of a Light Engine Running Air Brake Test?
Choose one answer below.
A
Standing Locomotive Air Brake Test
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B
An Emergency Brake Test
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C
Full System Pressure Test
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D
Visual Inspection Test
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QUESTION 9 / 25
What PSI is achieved when the retaining valve is in the High Pressure position?
Choose one answer below.
A
15 PSI
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B
20 PSI
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C
25 PSI
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D
30 PSI
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QUESTION 10 / 25
Do inspections by "Qualified Mechanical Inspectors" allow a train to extend the distance it can travel before further inspections are required?
Choose one answer below.
A
No, it requires the same inspection intervals
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B
Yes, it allows for extended distances
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C
Only for specific types of trains
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D
No, only for freight cars
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QUESTION 11 / 25
How can you determine if the air hose connections are secure?
Choose one answer below.
A
By checking the color of the hoses
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B
By listening for air leaks or inspecting for visible gaps
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C
By measuring the length of the hoses
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D
By testing the temperature of the air in the hoses
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QUESTION 12 / 25
How can you identify the "B" end of a railcar?
Choose one answer below.
A
By the color of the paint
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B
By the absence of a handbrake
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C
By the presence of a handbrake
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D
By the length of the railcar
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QUESTION 13 / 25
What should be done to prevent an air hose from dragging when the train moves?
Choose one answer below.
A
Ensure air hoses are always loose
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B
Inspect for condition, couple properly, and secure all brake equipment
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C
Remove hoses prior to movement
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D
Only check after every third movement
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QUESTION 14 / 25
After applying handbrakes in the proper place, what must be done to verify that they will prevent movement?
Choose one answer below.
A
By checking the air pressure
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B
By inspecting the safety chain
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C
By releasing all air brakes
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D
By visually inspecting the hand brakes
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QUESTION 15 / 25
Why is it important to inspect for air leaks in the braking system?
Choose one answer below.
A
They can cause overheating of the brakes
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B
They can lead to poor brake performance
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C
They increase fuel consumption
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D
They affect tire stability
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QUESTION 16 / 25
Which procedure must be followed immediately after a train separation?
Choose one answer below.
A
Inspect the entire train
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B
Ensure proper documentation
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C
Secure detached portions using Secondary Securement Procedure
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D
Check passenger safety
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QUESTION 17 / 25
What should be accomplished if air leaks are detected during an inspection?
Choose one answer below.
A
Ignore the leak if it’s minor
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B
Identify the source and repair or replace defective components
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C
Continue operations until the next scheduled maintenance
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D
Notify the engineer and proceed with the journey
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QUESTION 18 / 25
When must a Class I Air Brake Test be conducted?
Choose one answer below.
A
After every trip
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B
When a train is originally assembled
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C
Only when the crew changes
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D
After any minor repair
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QUESTION 19 / 25
What must be completed if a train must be secured at a location other than the terminal?
Choose one answer below.
A
Notify the mechanical team
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B
Determine the minimum number of hand brakes required
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C
Check the engine fuel levels
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D
Inspect for weather conditions
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QUESTION 20 / 25
How are axles designated from the "B" end of the car?
Choose one answer below.
A
Axles are numbered starting from the farthest end of the car
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B
Axles are designated with "1" for the axle closest to the "B" end
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C
Axles are identified only by the type of coupler used
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D
Axles are designated randomly
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QUESTION 21 / 25
What are the steps for cutting out the control valves on a defective car?
Choose one answer below.
A
Open the drain valve first
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B
Close the branch pipe cutout cock
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C
Release all air pressure
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D
Inspect the brake cylinder
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QUESTION 22 / 25
What is crucial to perform before beginning to operate a train after making couplings?
Choose one answer below.
A
Ensure proper coupling
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B
Grease the couplers
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C
Calibrate the speedometer
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D
Check the weather forecast
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QUESTION 23 / 25
Which type of testing is essential to verify the brake system’s functionality?
Choose one answer below.
A
visual inspection only
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B
brake effectiveness test and a leakage test
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C
sound test to check for operation noise
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D
load test using weights
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QUESTION 24 / 25
What can cause a car to be considered for a safety inspection?
Choose one answer below.
A
External aesthetics
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B
Leaking hazardous materials
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C
Brake color fading
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D
Length of the train
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QUESTION 25 / 25
To prevent an overcharge and minimize the possibility of sticking brakes, what should the engineer do before opening angle cocks?
Choose one answer below.
A
Make a full service brake application
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B
Adjust the locomotive speed
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C
Check air pressure levels
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D
Inspect the brake pads
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