Quiz medium

Carriage & Wagon Theory for LDCE(Mech)

medium wagon maintenance

1 / 50

1. What is the purpose of the warranty inspection report's certificate from the C&W representative?

1. To certify that the repairs were done

2. To certify that defects are due to inferior material, bad workmanship, or imperfect protection

3. To certify that the wagon is fit for service

4. To certify that the wagon has been painted

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2. What is the specific instruction regarding the pintail of a lock bolt during warranty inspection?

1. It must be painted red

2. It must be removed

3. It must be welded

4. It must be greased

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3. What is the permissible range for the longitudinal clearance between the Side frame pedestal and Adapter for a Narrow Jaw Bogie?

1. 9+5/-0 mm

2. 9+2/-3 mm

3. 10+5/-0 mm

4. 6+/-0 mm

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4. What is the condition of the "Backing Ring with vent holes" if found during maintenance?

1. It should be cleaned and reused

2. It should be discarded

3. It should be welded and reused

4. It should be lubricated and reused

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5. What is the purpose of stenciling the station code and date of inspection?

1. To indicate when the next POH is due

2. To record the final warranty inspection

3. To show when the last brake test was done

4. To identify the depot that last repaired the wagon

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6. For what purpose should the setting of the Empty load device be done during ROH?

1. Before the wagon is painted

2. Before the SWTR test

3. After the brake blocks are replaced

4. After the wagon is loaded

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7. What is the specific action for the bolster pocket slope liner if its thickness is less than 5 mm?

1. Replace the entire bolster

2. Change the liner

3. Add a new liner on top

4. Weld and build up the liner

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8. What is the maximum permissible clearance for pins and bushes before they need replacement?

1. 1.0 mm

2. 1.5 mm

3. 2.0 mm

4. 2.5 mm

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9. What is the consequence of finding loose rivets in a BTPN cradle during a structural audit?

1. They can be tightened and the wagon is approved

2. The wagon is automatically disqualified

3. The holes in the cradle and tee must be checked for elongation

4. The entire cradle must be replaced

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10. What must be ensured about cradle-barrel rivets during the structural audit of a BTPN wagon?

1. They must be painted

2. They must not be loose

3. They must be of a specific size

4. They must be replaced

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11. What condition of the cradle would disqualify a BTPN wagon from life extension?

1. If it is painted

2. If it is heavily corroded

3. If it has been lubricated

4. If it is made of a different material

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12. What is the permissible minimum thickness for the dished end of a BTPN barrel for life extension?

1. 6.5 mm

2. 7.5 mm

3. 8.0 mm

4. 9.0 mm

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13. What is the permissible minimum thickness for the cylindrical portion of a BTPN barrel for life extension?

1. 5.5 mm

2. 6.5 mm

3. 7.5 mm

4. 9.0 mm

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14. As part of the air brake system maintenance, what must be done with the dirt collector?

1. It must be replaced

2. It must be painted

3. It must be cleaned

4. It must be lubricated

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15. What is the condition of the Floor Plate for a wagon to be eligible for life extension?

1. It must be the original floor plate

2. It must be made of stainless steel

3. It should be replaced if heavily corroded, worn out, or damaged

4. No condition is specified for the floor plate

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16. For a wagon to be considered for life extension, what condition must the Head Stock satisfy?

1. It must be painted

2. It must not be cracked, bent, or permanently distorted

3. It must have a thickness of at least 10 mm

4. It must be replaced

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17. What is the recommended action for sole bars with oblong holes at side stanchion location?

1. They should be condemned

2. They should be reclaimed by welding or providing stiffener plate

3. They should be left as is

4. The stanchions should be removed

18 / 50

18. During ROH, what specific checks are to be performed on the anti-creep/articulated rotary operation?

1. Check for proper lubrication

2. Check the locking arrangement

3. Check for corrosion

4. Check for paint condition

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19. What is the correct procedure for disposing of a failed material sample sent to the Chemist and Metallurgist?

1. It is returned to the depot after testing

2. It is destroyed after testing

3. It is kept with the test report for linking with warranty reports

4. It is sent to the wagon builder

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20. What must be done with the sole bar if doorway locations are found corroded or worn within limits?

1. The sole bar must be replaced

2. The wagon must be condemned

3. It shall be strengthened by welding a protection plate

4. No action is needed as it is within limits

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21. During the structural audit of a bolster, what is the minimum acceptable thickness for the top and bottom flange of a BOXN wagon?

1. 6 mm

2. 8 mm

3. 10 mm

4. 12 mm

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22. What specific aspect of the Distributor Valve is addressed in items (i) and (ii) of the ROH air brake system maintenance?

1. Lubrication of its internal parts

2. Cleaning of strainer discs

3. Replacement of the valve diaphragm

4. Calibration of the pressure settings

23 / 50

23. If a departmental wagon needs to continue in service beyond 40 years, who can grant an extension, and for how long at a time?

1. DRM, for a maximum of 2 years

2. CWM, for a maximum of 1 year

3. PCME, for a maximum of 1 year (financial year)

4. GM, for a maximum of 5 years

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24. What is the time limit for the Railway Board to grant approval for premature condemnation, after which it is deemed approved?

1. 30 days

2. 60 days

3. 90 days

4. 120 days

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25. What is the consequence if a BOXN C category wagon sent to the workshop is not taken up for rehabilitation but its POH is due within the next 12 months?

1. It is sent back to the line without any work

2. It is condemned

3. It should be given POH

4. It is converted for departmental use

26 / 50

26. For a knuckle with nose wear between 4.3 mm and 9.0 mm, what is the permissible action?

1. It must be condemned immediately

2. It can be used in the yard

3. It must be sent to the workshop for repair

4. It can only be used on brake vans

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27. What is the nominal dimension for the lateral clearance between the Side frame column and Bolster land surface (all bogies)?

1. 4 mm

2. 6 mm

3. 8 mm

4. 10 mm

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28. What issue was addressed regarding BOXNHL wagons in a specific RDSO letter?

1. Their new POH interval

2. The procedure for repair of cracks in the Centre sill

3. The color they should be painted

4. The new type of bogie to be used

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29. In the structural audit of a bolster, what must be ensured about the Centre pivot top and side bearer location?

1. They are lubricated

2. They are in sound and true condition

3. They are within 1 mm of the original specification

4. They have been replaced recently

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30. What is the maximum permissible clearance for pins and bushes in bogie brake gear before they need to be changed?

1. 0.5 mm

2. 1.0 mm

3. 1.5 mm

4. 2.0 mm

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31. What does the acronym "CTRB" stand for in the context of wheel maintenance during ROH?

1. Central Train Reporting Bureau

2. Cartridge Tapered Roller Bearing

3. Certified Truck and Rail Bureau

4. Controlled Tension Roller Bearing

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32. For a BOBRN wagon, what is the nominal thickness of its sole bar web that should not be less than 8mm for life extension?

1. 7 mm

2. 8 mm

3. 9 mm

4. 10 mm

33 / 50

33. In the context of warranty inspection for BTPN wagons, what specific document is referred to for the examination of cradles and anchoring rivets?

1. Technical pamphlet G-95

2. Technical pamphlet G-90

3. Manual G-76

4. Manual G-80

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34. What is the purpose of stenciling the Station Code and date of Inspection on the wagon?

1. After every intermediate warranty inspection

2. Only at the time of the final warranty inspection

3. After every POH

4. Every time the wagon is examined in a sick line

35 / 50

35. For an ISMC-300 centre sill, what action is required before life extension if the wagon is found without a stiffener plate?

1. The wagon cannot be considered for life extension

2. A stiffener plate shall be welded

3. The centre sill must be replaced entirely

4. The wagon's codal life is reduced by 5 years

36 / 50

36. For a wagon to be considered for life extension, what is the acceptable minimum thickness for a CRF single-piece centre sill?

1. 6 mm

2. 7 mm

3. 8 mm

4. 9 mm

37 / 50

37. What is the maximum permissible wear on the vertical side of a centre pivot (22W) before it needs renewal by welding?

1. 2 mm

2. 3 mm

3. 4 mm

4. 5 mm

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38. What is the wear limit for a wedge slope surface that necessitates its replacement?

1. 1 mm

2. 2 mm

3. 3 mm

4. 4 mm

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39. If a BTPN barrel shows any signs of past repair (crack/patched), what is its fate regarding life extension?

1. It can still be considered after a special inspection

2. It must be derated for a lower speed

3. It should not be considered for life extension

4. It can be considered if the repair was done by the manufacturer

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40. During the structural audit of a BTPN wagon for life extension, what critical test must the barrel successfully pass?

1. Ultrasonic test

2. Magnetic particle test

3. Hydraulic test

4. Dye penetration test

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41. Who has the authority to extend the codal life of a wagon up to its next POH based on a structural audit and financial justification?

1. CRSE

2. PCME

3. CWM

4. GM

42 / 50

42. According to the guidelines for extending codal life, what must be done if a wagon is found structurally fit beyond its prescribed life?

1. It is automatically granted a 5-year extension

2. It must be painted a different color

3. Financial justification must be worked out for undertaking POH

4. It must be sent for another structural audit every year

43 / 50

43. What is the key difference in the POH return date marking for a rehabilitated BOXN wagon?

1. It is marked with a special "R" code

2. It is painted golden yellow, and the return date is marked accordingly after POH

3. Its life is extended by 5 years unconditionally

4. It does not require a POH return date

44 / 50

44. If a BOXN wagon of 25 years age is found with a heavily corroded body, what specific action is recommended?

1. Immediate condemnation

2. Classification as Category C for workshop repair

3. Selection for rehabilitation

4. Sending for structural audit only

45 / 50

45. A BOXN wagon is heavily damaged in an accident, requiring 150 man-hours of work. Where should this repair ideally be carried out?

1. In a traffic yard

2. In a sick line

3. In a workshop or major sick line

4. At the site of the accident

46 / 50

46. A BOXN wagon requires repair of its headstock, solebar, and changing of an axle guard with an estimated 50 man-hours. How is this classified?

1. Petty Repair

2. Medium Repair

3. Special Repair

4. Intensive Repair

47 / 50

47. During ROH, after carrying out maintenance on the air brake system, how must the wagon be tested?

1. By attaching it to a locomotive and running a brake test

2. By a single car test device

3. By visual inspection only

4. By releasing all air and checking for leaks by sound

48 / 50

48. In the context of attaching a goods wagon to a passenger train, what does "fully fitted with operative brake cylinders" imply?

1. The wagon has at least one working brake cylinder

2. All brake cylinders on the wagon are in working order

3. The brake cylinders are new

4. The brake cylinders are of a specific make

49 / 50

49. What is the correct procedure when a wagon due for warranty inspection passes through a nominated yard?

1. Note its passing and inform the divisional office

2. Preferably detach it and send to sick line for systematic check

3. Allow it to continue but log the defect for future action

4. Immediately unload it for a full inspection

50 / 50

50. For which of the following defects can charges be realized from the wagon builder?

1. Normal wear and tear of brake blocks

2. Corrosion due to the wagon's age

3. Poor workmanship on the part of the contractor

4. Damage caused by an accident in the yard

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