Letp 1a Air Brake Knowledge Quiz

20 Questions | Total Attempts: 30

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Letp 1a Air Brake Knowledge Quiz

Welcome to LETP 1A Air Brake Knowledge Quiz. Here you will find questions about the train's operating functions, such as the brake system. What do you know about cylinder pressure, safety valve, check valve, etc.? This quiz will test your knowledge of the topic. So, are you ready?


Questions and Answers
  • 1. 
    At what pressure is the safety valve on the discharge pipe set?
    • A. 

      185psi

    • B. 

      150psi

    • C. 

      60psi

    • D. 

      145psi

  • 2. 
    Which Main Reservoir receives air pressure first?
  • 3. 
    What type of checkvalve would be found between the main reservoirs?
  • 4. 
    At what PSI is the safety valve on the No. 1 Main Reservoir set?
    • A. 

      145PSI

    • B. 

      185PSI

    • C. 

      150PSI

    • D. 

      140PSI

  • 5. 
    How is the air compressor driven?
  • 6. 
    An initial reduction will remove about [Blank] PSI.
  • 7. 
    On passenger equipment, what is the brake pipe reduction during a full service application?
    • A. 

      26psi

    • B. 

      32psi

    • C. 

      25psi

    • D. 

      50psi

  • 8. 
    To release a GP40PH-2's brakes after an Emergency application has been made, how long must the AB handle be kept in Emergency?
    • A. 

      Once a full stop has been made, the AB handle can be moved to Suppression

    • B. 

      After the train has stopped, wait 30 seconds, then put the AB handle into Suppression

    • C. 

      After the train has stopped, wait 8 seconds, then move the AB handle into Suppression

    • D. 

      After the train has stopped, wait 1min, then put the AB handle into Suppression

  • 9. 
    On passenger equipment, the CCS will close its contacts at [Blank]psi and open the contacts at [Blank]psi.
  • 10. 
    What type of AB valve can be found on an MP20B-3?
  • 11. 
    The apprx. reduction in brake pipe pressure during a Minimum Reduction application of the 26C AB valve is between [Blank]psi and [Blank]psi.
  • 12. 
    While applying the train brakes, you should be watching the [Blank] gauge for the most accurate reading of brake pipe pressure.
  • 13. 
    What specific J-type relay valve can be found on NJT equipment?
  • 14. 
    When Brake Cylinder pressure is released, what forces the piston back to pull the shoe away from the wheel?
    • A. 

      Return Spring

    • B. 

      Increase in Brake Pipe Pressure

    • C. 

      Decrease in Brake Pipe Pressure

    • D. 

      Control Valve

  • 15. 
    The Air Compressors Low Pressure Cylinder delivers air to the High Pressure Cylinder where it is compressed between [Blank]psi and [Blank]psi.
  • 16. 
    ___________ ____________ is a device, actuated by brake cylinder pressure, which indicates whether the brakes are applied or released.
    • A. 

      AB Valve quadrants

    • B. 

      Indicator Light Panel (local)

    • C. 

      Brake Indicator

    • D. 

      Indicator Light

  • 17. 
    [Blank] is defined as the undesired accumulation of oil and water in the compressed air system continuously formed as compressed air cools.
  • 18. 
    [Blank] (4 words) is a device used on locomotives and cars to isolate the control valve from the brake pipe. When cut in, the handle is in the vertical position.
  • 19. 
    A manually operated device found on all passenger cars and locomotives for the purpose of applying the air brakes at an Emergency rate.
    • A. 

      Emergency Brake Valve

    • B. 

      Oh Shit Handle

    • C. 

      Emergency Reservoir

    • D. 

      Emergency Brake application

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