Course Content
Diesel Traction & Trainsets
Disaster Management, Safety
EnHM, Planning & PCO
G K
Numerical Aptitude
Carriage & Wagon Theory for LDCE(Mech)

medium ICF vacum brake

Locking method

1 / 50

1. What is the specific requirement for securing the control rod head after setting the correct dimension 'A' on the slack adjuster?

Sequence before lowering

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2. In the final coach assembly, after receiving overhauled components, what is the last mechanical step before lowering the coach onto the bogies?

Diagnostic technique

3 / 50

3. For abnormal variation in vacuum between engine gauge and brake van gauge, what is the recommended method to locate a partial obstruction in the train pipe?

Shop-specific equipment

4 / 50

4. According to Table 5.4, which specific test rig is listed only under the Vacuum brake shop and not under Slack adjuster shop?

Tool in all shops

5 / 50

5. In the list of tools and plant (Table 5.4), which equipment is common to all three shops (Lifting, Vacuum brake, and Slack adjuster)?

Corrective action

6 / 50

6. According to the troubleshooting table, what is the recommended remedy for "Excess 'A' dimension" on coaches with slack adjusters?

Symptom interpretation

7 / 50

7. In the troubleshooting table, what defect is indicated by "Brake shaft arm remains up even after release of brake, though the piston comes down"?

Diagnostic action

8 / 50

8. In the troubleshooting table for coaches without slack adjusters, if brake power is weak and brake blocks are slack but not braking wheels, what is the recommended remedy?

Adjustment capacity meaning

9 / 50

9. What is the significance of dimension 'e' on the slack adjuster, and under what conditions is it at its maximum value?

Release condition

10 / 50

10. When setting the slack adjuster dimension 'A', what preliminary step must be taken before the final measurement and pinning?

A' dimension specification

11 / 50

11. For the slack adjuster control dimension 'A', what is the correct range for ICF coaches with 16.25t bogies?

Stabilization time

12 / 50

12. In the final coach testing procedure, after creating and destroying 460 mm vacuum, how long must one wait before creating the balancing vacuum of 356 mm?

Required gaps

13 / 50

13. For a vacuum cylinder fitted on a coach, what are the two critical clearances that must be maintained as per Clause 509a?

Items not invariably changed

14 / 50

14. According to Table 5.3, which of the following items is listed as a component to be changed on a condition basis in an Escort type D.A. valve?

Gauge relationship

15 / 50

15. In the D.A. valve proportionality test, what relationship is observed between gauge A and gauge B?

Acceptable leak rate

16 / 50

16. In the D.A. valve retention test, with 530 mm Hg vacuum on both gauges, what is the maximum allowable drop in 10 minutes after closing stop cocks X and Y?

Proper tightening order

17 / 50

17. During D.A. valve assembly, what is the correct sequence for tightening the four hexagonal nuts joining the upper and lower housing?

Cylinder malfunction sign

18 / 50

18. In the BVT, what indicates a faulty cylinder when the vacuum is increased from 356 mm to 460 mm?

Stabilization time

19 / 50

19. During the Balanced Vacuum Test (BVT) on the test bed, after destroying the initial vacuum, how long must one wait before creating the balancing vacuum of 356 mm?

Reset vacuum level

20 / 50

20. In the release valve operation test, what vacuum level, when re-created, should cause the valve to reset itself?

Edge preparation

21 / 50

21. During release valve assembly, what specific condition must be ensured regarding the spindle washer seat?

Recovery requirement

22 / 50

22. In the stretch test for a new rolling ring, a test piece is stretched to 300% of its original length for 3 hours. What is the acceptance criterion upon release?

Recovery requirement

23 / 50

23. In the compression test for a new rolling ring, a 50 mm long test piece is compressed to half its sectional diameter for 3 hours. What is the acceptance criterion upon release?

Good ring appearance

24 / 50

24. In the rolling ring test for twist, what is the visual indication of a good ring?

Lug condition threshold

25 / 50

25. For the cylinder barrel, what is the condition for mandatory replacement regarding the original lugs?

Measurement tool range

26 / 50

26. What is the specified range for measuring the inside diameter of the cylinder barrel using a micrometer?

Measurement tool range

27 / 50

27. What is the specified range for measuring the outside diameter of the piston using a micrometer?

Thread preparation

28 / 50

28. In the vacuum cylinder overhaul, what is the acceptable condition for the piston's blind holes for the piston rod cover bolts?

Activation vacuum level

29 / 50

29. For an automatic guard van valve, what specific vacuum destruction level should cause the valve to lift automatically?

Valve self-reset behavior

30 / 50

30. In the guard van valve operation test, with atmospheric pressure throughout the assembly, what should happen when the operating handle is released?

Oversize hole action

31 / 50

31. In the guard van valve overhaul, if the passage hole diameter through the valve exceeds 6 mm, what action is required?

Pressure specification

32 / 50

32. What is the pneumatic pressure used to test the soundness of welded seams on a vacuum reservoir?

Corrosion extent decision

33 / 50

33. For vacuum reservoir repair, what is the threshold for cutting out and replacing corroded areas versus replacing the entire barrel?

Acceptable leak rate

34 / 50

34. After the alarm chain test and restoration of vacuum, what is the specified leakage rate when the exhauster is isolated?

Diagnostic meaning

35 / 50

35. During the alarm chain test, what does a drop in vacuum of less than 130 mm accompanied by brake application indicate?

Valve component action

36 / 50

36. During alarm chain apparatus overhaul, what specific action is required for the clapet valve?

Stress prevention

37 / 50

37. What is the primary reason for ensuring that the brake shaft is parallel to the cylinder trunnions?

Missing bush remedy

38 / 50

38. For vacuum cylinder trunnion brackets, what is the corrective action if there are no bushes provided?

Fastening requirement

39 / 50

39. What does the requirement for "double secured" mean for vacuum reservoir straps?

Hole restoration method

40 / 50

40. For vacuum reservoir straps, if the securing holes in the underframe are worn more than 3 mm, what is the prescribed repair method?

When to reject hose

41 / 50

41. What are the multiple rejection criteria for a hose pipe after testing?

Defect detection

42 / 50

42. In the stretch test for hose pipes, after stretching the hose 100 times, what is examined in the stretched position?

End alignment requirement

43 / 50

43. For the hose pipe bend test, what is the specific condition that must be met regarding the hose ends?

Test specifications

44 / 50

44. In the rubber hose pipe vacuum retention test, the hose is connected to a chamber of specific volume. What is this volume and what is the test duration?

Maintaining flow area

45 / 50

45. When renewing a train pipe, what critical factor must be ensured during the bending process?

Tool purpose

46 / 50

46. During train pipe inspection, a spiked hammer is specifically recommended for which purpose?

Proper order of work

47 / 50

47. What is the sequence of steps for the train pipe maintenance procedure after lifting the coach?

Components to secure

48 / 50

48. Clause 502b lists items requiring particular attention during POH. Which of the following combinations includes all the elements that must be secured as prescribed?

Wear limit action

49 / 50

49. During POH, pins and bushes are examined for wear. If the radial clearance exceeds 0.75 mm, what is the mandatory action?

System improvements

50 / 50

50. The gradual improvement of the vacuum brake system over the years involved multiple modifications. Which of the following combinations correctly lists all the enhancements mentioned in the document?

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