Quiz easy

Carriage & Wagon Theory for LDCE(Mech)

easy wagon underframe

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1. What is used for center sill in bogie wagons generally?

1. ISMC 250

2. Rolled Z-Section

3. Pressed channel

4. Hat section

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2. Where are repair procedures for stainless steel wagons discussed?

1. Chapter 6

2. Appendix VI

3. Section 515

4. Para 512

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3. What modification was done for BCNHL wagons to make them safe?

1. Stronger wheels

2. Provision of modified doors

3. New braking system

4. Reinforced roof

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4. Which wagon family underwent M1 modification for higher speed operation?

1. BOXN family

2. BCN family

3. BVZI family

4. BRN family

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5. What is provided on BRN wagons for securing steel plant consignments?

1. Extra doors

2. Side bracket with a link

3. Stronger roof

4. Additional wheels

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6. What specification is used for painting the underframe?

1. IRCA Part III

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

3. RDSO Drg. No. WD-99031

4. WM-74002

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7. What is done in case of a vertical crack?

1. Drilled at both ends

2. Patching is done to strengthen

3. Ignored

4. Cut out completely

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8. What is provided to increase rigidity of joints in case of chronic failures?

1. Extra paint

2. Cast steel/fabricated knees and brackets

3. Thicker bolts

4. Rubber padding

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9. What should be checked about buffers during inspection?

1. Their color

2. That they are not dead (springs effective)

3. Their weight

4. Their length only

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10. In which year was the design for BVZI footstep arrangement issued?

1. 2004

2. 2008

3. 2011

4. 2015

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11. What modification was made for BVZI CP top bracket due to frequent failures?

1. Removed completely

2. Modified to new unitized design

3. Made thicker

4. Made of aluminum

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12. How much longer is BVZI underframe compared to BVZC?

1. 2 meters

2. 3 meters

3. 4 meters

4. 5 meters

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13. When was the BVZI bogie brake van introduced?

1. 1995

2. 2000

3. 2004

4. 2010

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14. What tendency does the underframe of brake vans have in service?

1. To crack

2. To buckle

3. To rust quickly

4. To bend upward

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15. What thickness are floor plates generally made of?

1. 2 mm / 3 mm

2. 4 mm / 5 mm / 6 mm

3. 8 mm / 10 mm

4. 12 mm / 15 mm

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16. At what web thickness should a sole bar be replaced?

1. Less than 6 mm

2. Less than 5 mm

3. Less than 4 mm

4. Less than 3 mm

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17. What is the web thickness of ISMC 250×82 sole bar?

1. 6 mm

2. 8 mm

3. 9 mm

4. 10 mm

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18. If web thickness reduction is more than 2 mm but less than 5 mm, what plate is used?

1. 3.15 mm plate

2. 4 mm plate

3. 5 mm copper bearing mild steel plate

4. 6 mm stainless steel plate

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19. What thickness of protection sheet is welded below the door opening area if web reduction is less than 2 mm?

1. 2 mm

2. 3.15 mm

3. 5 mm

4. 6 mm

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20. What should be the minimum length of a sole bar patch plate?

1. 250 mm

2. 300 mm

3. 400 mm

4. 508 mm

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21. What should be the maximum pitch for additional rivets in sole bar patching?

1. 60 mm

2. 75 mm

3. 90 mm

4. 100 mm

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22. What is the minimum thickness for a sole bar patch?

1. 5 mm

2. 8 mm

3. 10 mm

4. 12 mm

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23. What material are sole bars made from for most bogie wagons?

1. Aluminum

2. ISMC-250×9.0 web channel of copper-bearing mild steel

3. Stainless steel

4. Cast iron

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24. How are slightly bent headstock members straightened?

1. By cold hammering only

2. Heated in position and straightened

3. Replaced completely

4. Left as is

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25. In case of a horizontal crack, what is the first step?

1. Weld immediately

2. Drill at both ends

3. Apply paint

4. Ignore it

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26. What should be done with all slack/broken rivets at POH?

1. Left as is

2. Replaced by sound ones

3. Painted over

4. Welded

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27. What section is used for center sill in BOXN underframe?

1. ISMC 250×82×9

2. Z Section

3. ISMC 100×50×5

4. 10 mm pressing

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28. What is the bolster made of in BOXN underframe?

1. 10 mm pressing

2. 5/8 mm plate

3. ISMC 250×82×9

4. 10/12 mm plate

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29. What is the headstock made of in BOXN underframe?

1. ISMC 250×82×9

2. 5/8 mm plate

3. 10 mm pressing

4. ISMC 100×50×5

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30. What is the cross bar made of in BOXN underframe?

1. ISMC 100×50×5

2. ISMC 250×82×9

3. 5/8 mm plate

4. 10 mm pressing

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31. What section is used for stringer in BOXN underframe?

1. ISMC 250×82×9

2. ISMC 100×50×5

3. 5/8 mm plate

4. 10 mm pressing

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32. In BOXN wagons, what section is used for sole bars?

1. ISMC 100×50×5

2. ISMC 250×82×9

3. ISMC 150×75×8

4. ISMC 200×75×8

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33. What is provided on hopper wagons for door operation?

1. Hand brake wheel

2. Door operating mechanism

3. Side stanchions

4. Lashing chains

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34. What is fitted to the underframe for container flats?

1. Extra doors

2. Container locking/anchoring arrangement

3. Roof sheets

4. Side panels

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35. What type of loads does the underframe have to withstand during marshaling?

1. Only static loads

2. Heavy buffing impacts

3. Only wind loads

4. Only thermal loads

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36. What sub-assembly is fitted to the underframe for coupling purposes?

1. Door operating mechanism

2. Draw gear/CBC sub-assembly

3. Side stanchions

4. Container locks

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37. What is the coupler height tolerance from rail level when bogies are fabricated by the wagon builder?

1. 0/-3 mm

2. 0/-5 mm

3. ±3 mm

4. ±5 mm

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38. What is the tolerance for door length?

1. 0/-3 mm

2. 5/-0 mm

3. ±3 mm

4. 3/-0 mm

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39. What is the tolerance for door opening (vertical or horizontal)?

1. ±3 mm

2. 5/-0 mm

3. +0/-3 mm

4. ±1.5 mm

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40. What is the maximum difference allowed between diagonals of the underframe?

1. 3 mm

2. 4 mm

3. 5 mm

4. 7 mm

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41. What is the tolerance for inside width?

1. ±5 mm

2. ±3 mm

3. +7/-3 mm

4. ±2 mm

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42. What is the tolerance for inside length in welded construction?

1. ±5 mm

2. 7/-3 mm

3. ±3 mm

4. 0/-5 mm

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43. What is given to underframes at the time of manufacture to prevent sagging under load?

1. Extra paint

2. An initial camber

3. Thicker steel

4. Reinforced joints

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44. What sections are generally used for headstock and solebars?

1. Circular sections

2. Channel/CRF/Press Z-section/Hat section

3. I-sections only

4. Angle sections only

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45. What is provided at critical locations to impart additional strength to joints?

1. Extra paint

2. Gusset plates and knees

3. Thicker sheets

4. Rubber pads

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46. What protects the underframe against diagonal deflection?

1. Floor plates

2. Diagonals and gusset plates

3. Doors

4. Roof sheets

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47. Which of these is a main member of a typical conventional BG wagon underframe?

1. Roof sheet

2. Side panel

3. Sole bar

4. Door handle

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48. In bogie wagons, how is load transferred to the bogie frame?

1. Through the wheels

2. By means of pivot arrangement

3. Through the coupler

4. By direct contact

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49. What determines the permissible wheelbase of a bogie wagon?

1. The color of the wagon

2. The overall dimensions and design of the underframe

3. The type of paint used

4. The age of the wagon

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50. What is the main load-bearing sub-assembly of a wagon?

1. The bogie

2. The underframe

3. The coupler

4. The wheels

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