Quiz difficult

Carriage & Wagon Theory for LDCE(Mech)

difficult wagon underframe

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1. What is the complete source for repair procedures of stainless steel wagons?

1. Chapter 6

2. APPENDIX VI

3. Para 515

4. Section 512

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2. What are the complete BCN family modification details?

1. Only date

2. Completion of M1 modification for higher speed operation vide RB letter No. 2005/M(N)/204/2 Vol-II dated 30.11.2010

3. Only letter number

4. Only volume number

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3. What is the complete reference for painting specification?

1. IRCA Part III

2. Spec. G-72 (Rev.3) or latest amendment

3. RDSO Drg. WD-99031

4. WM-74002

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4. What is the complete repair procedure reference for sole bars?

1. Para 506

2. Para 508

3. Para 507

4. Para 509

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5. What is the complete reference for underframe inspection at POH?

1. No specific reference

2. As per IRCA Part III (Latest)

3. As per RDSO guidelines

4. As per G-72

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6. What are the complete items checked for rivets/lock bolts during sickline maintenance?

1. Only headstock rivets

2. Rivets of axle guard, scroll irons, headstock, and knees joining main members checked for looseness

3. Only axle guard rivets

4. Only scroll iron rivets

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7. What is the complete action for chronic failure of main members?

1. Scrap wagon

2. Strengthen members and provide cast steel/fabricated knees and brackets

3. Reduce train speed

4. Reduce load

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8. What is the complete consequence of dead buffers?

1. No consequence

2. Buffing load will be directly taken by underframe members leading to extensive damage

3. Brake failure

4. Derailment

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9. What is the complete requirement for checking buffer sub-assemblies and draw gear?

1. Only visual check

2. Should be within prescribed minimum and maximum dimensions

3. Only check for damage

4. Only check for rust

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10. What is the complete modification reference for BTPN centre sill cracks?

1. Undated reference

2. Vide RB letter No. 2015/M(N)/951/17 dated 17.12.2018

3. Only 2015 reference

4. Only 17.12.2018

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11. What is the complete modification reference for BCNHL doors?

1. Only RDSO drawing

2. Vide RB letter No. 2005/M(N)/204/1 Vol-III dated 19.10.2015

3. Only date

4. Only letter number

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12. What are the complete BRN wagon modification references?

1. Only 27.05.94

2. 27.05.94 for side bracket, 07.01.99 for strengthening, 31.03.99 for corrosion, 03.07.15 for re-cambering

3. Only 07.01.99

4. Only 03.07.15

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13. What are the complete dates for BVZI CP top bracket modifications?

1. Only 25.01.2011

2. 25.01.2011 for new manufacturing modification, 29.12.2011 for compulsory replacement design

3. Only 29.12.2011

4. 27.05.94

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14. What is the complete difference between BVZI and BVZC underframes?

1. Same length

2. BVZI is 5 meters longer and has different CP top bracket, footstep, and guard seat designs

3. BVZC is longer

4. Only material difference

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15. What is the complete reason why open wagons get damaged more often than covered wagons?

1. Poor design

2. Heavier loads are generally carried and higher incidence of damage during shunting due to uneven loading or improper securing

3. More usage

4. Older age

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16. What is the complete relationship between web thickness and replacement requirement?

1. No relationship

2. Web thickness of ISMC 250×82 is 9mm; if found less than 4mm, sole bar should be replaced

3. Replace if less than 9mm

4. Replace if less than 5mm

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17. What is the complete requirement when inner and outer patches cannot both be fitted?

1. Do nothing

2. Only outer or inner patch may be fitted with thickness not less than parent material

3. Replace sole bar

4. Use smaller patch

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18. What is the complete repair method for cracks in mild steel sole bar flange?

1. Replace flange

2. Repair by welding

3. Add patch

4. Hammer closed

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19. What are the complete items checked during cleaning and de-rusting of underframe?

1. Only surface rust

2. Members checked for heavy corrosion or deformation requiring rectification

3. Only paint condition

4. Only bolts

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20. What is the complete requirement for center sill repair according to the document?

1. Any method

2. Repair as per RDSO Drg.No.WD-99031-S-1

3. Replace always

4. Weld only

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21. What is the complete tolerance for tank wagon barrel diameter including ovality?

1. ±5 mm

2. ±3 mm

3. +10/-3 mm

4. ±1 mm

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22. What is the complete tolerance for distance between stanchions on body side?

1. ±3 mm

2. ±2 mm

3. ±1.5 mm

4. ±1 mm

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23. What is the complete tolerance for distance between bogie pivot center and adjacent headstock?

1. ±3 mm

2. ±2 mm

3. ±1.5 mm

4. ±1 mm

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24. What is the complete tolerance for distance between bogie pivot centers in riveted construction?

1. ±5 mm

2. ±3 mm

3. +5/-2 mm

4. ±2 mm

25 / 50

25. What is the complete tolerance for door opening diagonal difference?

1. 5 mm

2. 4 mm

3. 3 mm

4. 2 mm

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26. What is the complete tolerance for door width?

1. ±3 mm

2. #ERROR!

3. +5/-0 mm

4. ±1.5 mm

27 / 50

27. What is the complete set of additional work in workshops during POH/NPOH?

1. Only painting

2. Inspection as per para 504, cleaning/de-rusting, floor plate repairs as per 509, brake van underframe as per 510, bogie wagon underframe as per 503, painting as per G-72

3. Only floor plate repairs

4. Only bogie wagon work

28 / 50

28. What is the complete set of work to be carried out in sickline and ROH depot?

1. Only buffer checks

2. Buffer/draw gear checks, headstock/solebar/diagonal repairs, strengthen chronic failures, check rivets, crack repairs, specific para references for each repair

3. Only rivet checks

4. Only crack repairs

29 / 50

29. What are the complete modification items listed in para 512?

1. Only BRN modifications

2. BRN modifications, BVZC stiffener, BCN M1 modification, BVZI CP bracket, BRN/BRNA re-cambering, BCNHL doors, BTPN centre sill modifications

3. Only wagon body modifications

4. Only brake van modifications

30 / 50

30. What are the complete BVZI brake van modifications mentioned?

1. Only CP top bracket

2. CP top bracket modified to unitized design (Drawing WD-11065-S-01), footstep arrangement (Drawing WD-81035-S-19), guard seat (Drawing WD-04059-S-01)

3. Only footstep

4. Only guard seat

31 / 50

31. What is the complete method for straightening brake van underframe drooping ends?

1. Heat and hammer

2. Hold main members with screw couplings against fixed structure, raise ends with screw jacks, no heating

3. Replace ends

4. Add weights

32 / 50

32. What is the complete procedure for dealing with corrosion on sole bar at doorways?

1. Replace sole bar

2. If web reduction <2mm: weld 3.15mm protection sheet; if 2-5mm: use 5mm plate; if <4mm remaining: replace sole bar

3. Only apply paint

4. Ignore if minor

33 / 50

33. What are the complete requirements for rivets in sole bar patching?

1. Any size and spacing

2. Use existing holes where possible, additional rivets min 10mm diameter, pitch max 90mm

3. Only new holes

4. Only use existing holes

34 / 50

34. What are the complete requirements for inner and outer patches on sole bar?

1. Same size

2. Outer covers full web depth and crack flange, inner covers full channel depth with same length as outer to extent possible

3. Inner smaller than outer

4. Outer smaller than inner

35 / 50

35. What are the complete requirements for sole bar patching?

1. Any patch size

2. Patch min 10mm thick, riveted to web and flange, outer patch covers full web depth and crack flange, inner patch covers full channel depth, length min 508mm

3. Only thickness requirement

4. Only length requirement

36 / 50

36. What is the complete method for repairing a damaged sole bar portion?

1. Weld the crack

2. Cut entire portion, graft new portion of same section, support with double flanged U-shaped patch (10mm min) and back plate

3. Apply external patch only

4. Hammer straight

37 / 50

37. What is the complete material specification for sole bars on different wagon types?

1. Only mild steel

2. ISMC-250×9.0 copper-bearing mild steel for most, IRSM-41 for BOXNCR, IRSM-44 or micro-alloyed for new CRF sections

3. Only stainless steel

4. Only cast iron

38 / 50

38. What is the complete procedure for straightening a bent headstock?

1. Hammer cold

2. Heat in position with hack's burner, straighten with devices or sled hammer, strip buffer assembly, gas cut floor plate if necessary

3. Replace completely

4. Leave as is

39 / 50

39. What is the complete procedure for repairing a vertical crack?

1. Weld immediately

2. Drill at ends and weld

3. Patching to strengthen the cracked portion

4. Replace entire member

40 / 50

40. What is the complete procedure for repairing a horizontal crack?

1. Weld immediately

2. Drill at both ends, gauge out cracked portion, weld

3. Cover with patch

4. Cut out and replace

41 / 50

41. What is the complete inspection requirement for underframe at POH?

1. Only visual check

2. Check rivets/lock bolts for looseness, inspect for cracks with specific procedures for horizontal/vertical, check alignment

3. Only crack inspection

4. Only alignment check

42 / 50

42. What are the complete repair requirements for BRN wagon underframe issues?

1. Only re-cambering

2. Modifications as per RDSO Drg.No.WD-95010-S-1,S-2,S-3 and re-cambering as per G-107

3. Only headstock repair

4. Only sole bar repair

43 / 50

43. What is the complete specification for BOXN underframe members?

1. Only sole bar dimensions

2. Sole bar ISMC 250×82×9, cross bar 5/8 mm plate, stringer ISMC 100×50×5, head stock 10 mm pressing, bolster 10/12 mm plate, centre sill Z Section

3. Only headstock details

4. Only centre sill details

44 / 50

44. What are the complete types of loads the underframe must withstand?

1. Only static loads

2. Static loads, dynamic impacts from track unevenness, heavy buffing impacts during marshaling, heavy jerks at starting

3. Only dynamic loads

4. Only buffing loads

45 / 50

45. What are the complete sub-assemblies fitted to the underframe?

1. Draw gear only

2. Draw gear/CBC, container locks, side stanchions & lashing chains, door operating mechanism, top center pivot

3. Door mechanism only

4. Container locks only

46 / 50

46. What is the complete requirement for butting faces of two courses or a barrel course and dished end before welding?

1. No requirement

2. Aligned to +1 mm accuracy

3. Aligned to +5 mm accuracy

4. Aligned to +10 mm accuracy

47 / 50

47. What is the complete tolerance requirement for non-pressure tank wagon barrels?

1. Length, diameter including ovality, inside dia of manhole, height of dome with specific values

2. Only length tolerance

3. Only diameter tolerance

4. Only dome height

48 / 50

48. What are the complete construction methods used for underframe members over time?

1. Only welding

2. Riveting in earlier wagons, welding in later wagons

3. Only bolting

4. Only casting

49 / 50

49. What are the complete functions of diagonals and gusset plates in the underframe?

1. Only decorative

2. Protect against diagonal deflection, help absorb and distribute buffing loads over different members

3. Only support the floor

4. Only connect to bogies

50 / 50

50. What is the complete relationship between underframe design and loading according to the introduction?

1. Only static load considered

2. Quantum and pattern of loading, track considerations, buffing and impact loads, shunting speeds all determine underframe design

3. Only buffing loads matter

4. Only track considerations matter

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