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Bnsf Letp Exam Questions and Answers

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Bnsf Letp Exam Questions and Answers Main psi - Answer120-140 /.Brake pipe psi - Answer90 /.What follows brake pipe psi - AnswerEqualizing reservoir /.Equalizing Reservoir psi - Answer90 /.Single shoe psi - Answer72 /.Clasp shoe psi - Answer45 /.Release - AnswerCharge /...

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  • November 19, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Bnsf Letp
  • Bnsf Letp
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Bnsf Letp Exam Questions and Answers 2024\2025


Main psi - Answer120-140

/.Brake pipe psi - Answer90

/.What follows brake pipe psi - AnswerEqualizing reservoir

/.Equalizing Reservoir psi - Answer90

/.Single shoe psi - Answer72

/.Clasp shoe psi - Answer45

/.Release - AnswerCharge

/.Min - Answer6-8

/.Actuation procedure - Answer2 secs before minimum of 10 secs until Bc is 0

/.Full Service - Answer26 psi

/.What is the service zone - Answer8-25

/.Split reduction procedure - AnswerMin the 2-3 increments every 30 secs

/.suppression - Answerrecover penalty

/.Emergency - AnswerDumps all air

/.Regulating valve - AnswerRegulates Equalizing reservoir 90-105

/.MU-2A Valve - AnswerCuts out automatic valves

/.Managing speed procedure - AnswerThrottle, dynamics, balanced braking

/.how many secs from dyno -throttle - Answer10 secs

/.max air to control speed - Answer15 psi

/.What do you need your flow to be below on conventional train - Answer60 and below

/.Flow on Dp train - Answer90 and below A+B

, /.Reducing loco overcharge - Answer1.Adjust reg valve
2.make 20 psi (105-20=85)
3.equalize
4. release
5. verify Equalizing res 90 psi

/.Emergency what equalizes - AnswerEmergency Reservoir, auxiliary, brake cylinder

/.Full service what equalizes - AnswerAuxiliary, brake cylinder, brake pipe

/.Freight car emergency/Aux psi - AnswerEmerg 90psi
Aux 90 psi

/.Brake pipe leakage method - Answer1. charge system 15 psi of reg valve by gauge or
device at rear
2. wait for signal to apply brakes
3. When signal received to release reduce brake pipe by 20 psi.
4. allow brake pipe to exhaust.
5. wait 1 min
6. cut out automatic brake valve
7. wait an additional 1 min for brake pipe to equalize
8. Monitor 1 min
if leakage does not exceed 5 psi test ok
if exceeds 5 psi, inspect leakage/retest

/.Prior to moving light loco outside on mechanical limits, What 5 steps are required -
Answer1. Ensure loco air brakes applied on each loco during visual inspection
2. Confirm that sufficient main res
3. Position cutout cocks & valves for multiple unit operations
4. ensure air hoses are coupled
5. verify hand brakes are RELEASED

/.Cutting off & recouping Airbrake test(Abth 100.14) - AnswerYou know the answer Bitch
1. Train is uncoupled, unchanged, and then recoupled in 24hrs or less, determine brake
pipe is restored by gauge or device at the rear end.
2.if exceeds 24hrs conduct class 1 airbrake test

/.Emergency Brake application(Abth 103.8) - AnswerUse emergency brake app if any
condition occurs in which there is doubt that service applications can control the speed
of a train/ When max auth speed exceeds 5mph or more.
1. move automatic to emergency until train stops
2. lift red cover and activate emergency on etd

/.Determining Number of cars requiring Hand Brakes(Abth 104.14) - Answer1. Grade &
adhesion
2. Car types/ number of loads & empties

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