Quiz easy

Carriage & Wagon Theory for LDCE(Mech)

easy wagon bogie

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1. How many snubber springs are used in BOXN with CASNUB 22 NLB at 20.32t?

1. 4

2. 6

3. 8

4. 10

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2. How many outer springs are used in BOXN with CASNUB 22 NLB at 20.32t?

1. 10

2. 12

3. 14

4. 16

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3. What is the condemning wheel diameter for LWLH25 bogie?

1. 906 mm

2. 840 mm

3. 780 mm

4. 750 mm

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4. What is the new wheel diameter for LWLH25 bogie?

1. 1000 mm

2. 950 mm

3. 840 mm

4. 780 mm

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5. What is the maximum/normal axle load for Class K bearing?

1. 20.32 t

2. 22.9 t

3. 25 t

4. 30 t

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6. What is the fretting index of Class E bearing?

1. 0.3

2. 0.5

3. 0.75

4. 1

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7. What is the fretting index of Class K bearing?

1. 0.3

2. 0.5

3. 0.75

4. 1

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8. What is the L10 life of Class E bearing?

1. 10 Lac Km

2. 12 Lac Km

3. 14 Lac Km

4. 16 Lac Km

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9. What is the L10 life of Class K bearing?

1. 10 Lac Km

2. 12 Lac Km

3. 14 Lac Km

4. 16 Lac Km

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10. What is the maximum temperature at which a bearing should be detached?

1. 70°C

2. 80°C

3. 90°C

4. 100°C

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11. What torque should be maintained for Class K CTRB end cap screws?

1. 40 Kg-m

2. 45 Kg-m

3. 50 Kg-m

4. 58 Kg-m

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12. What torque should be maintained for Class E CTRB end cap screws?

1. 30 Kg-m

2. 40 Kg-m

3. 50 Kg-m

4. 58 Kg-m

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13. How much grease is applied to Class E CTRB total?

1. 290 gms

2. 355 gms

3. 390 gms

4. 420 gms

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14. What grease specification is used for CTRBs?

1. IS:495

2. WD-24-MISC-2003

3. G-72

4. IRS-R-16

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15. What is the minimum flange thickness allowed for wheels?

1. 12 mm

2. 14 mm

3. 16 mm

4. 18 mm

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16. What is the permissible flat surface on tread for BG wagons?

1. 30 mm

2. 45 mm

3. 60 mm

4. 75 mm

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17. What is the portion of axle on which wheel is pressed called?

1. Journal

2. Shoulder

3. Wheel seat

4. Axle body

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18. What steel specification is used for carriage and wagon axles?

1. IRS-R-16

2. IRS-M-44

3. IS:2062

4. IS:3195

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19. What is an axle?

1. A wheel

2. A steel shaft on which wheels are mounted

3. A brake component

4. A spring

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20. What should not be applied to friction plates and bolster liners?

1. Grease

2. Paint or grease

3. Oil

4. Water

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21. How much graphite flakes should be used for center pivot lubrication?

1. 50-100 g

2. 100-150 g

3. 200-300 g

4. 400-500 g

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22. Should new and old springs be mixed?

1. Yes, if similar

2. No, mixing should be avoided

3. Only if height matched

4. Only in emergency

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23. What is the recommended free height variation for springs in the same group?

1. Not more than 1 mm

2. Not more than 3 mm

3. Not more than 5 mm

4. Not more than 10 mm

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24. What should be the hardness of pins and bushes?

1. 200-220 BHN

2. 250-280 BHN

3. 300-320 BHN

4. 350-380 BHN

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25. What material specification is used for brake gear pins and bushes?

1. IS:2062

2. IS:5517-45C8 hardened/tempered

3. IS:3885

4. IS:3195

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26. What is the maximum permissible wear on pin diameter and bush inside diameter?

1. 0.5 mm

2. 1.0 mm

3. 1.5 mm

4. 2.0 mm

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27. What is the main purpose of providing an elastomeric pad?

1. To increase speed

2. To reduce wheel flange wear

3. To improve braking

4. To reduce weight

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28. How many fit bolts are used in spring plank connection?

1. Two

2. Four

3. Six

4. Eight

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29. How many rivets join the spring plank to side frames?

1. Four

2. Six

3. Eight

4. Ten

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30. Up to what thickness are bolster liners permitted in service?

1. 2 mm

2. 3 mm

3. 4 mm

4. 5 mm

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31. What thickness are bolster pocket liners?

1. 5 mm

2. 6 mm

3. 8 mm

4. 10 mm

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32. Up to what thickness are side frame liners permitted in service?

1. 3 mm

2. 4 mm

3. 5 mm

4. 6 mm

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33. What thickness are side frame column wear liners made of?

1. 5 mm

2. 8 mm

3. 10 mm

4. 12 mm

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34. What should be done with an axle showing welding or cutting torch damage?

1. Repaired

2. Scrapped

3. Sent for heat treatment

4. Ground smooth

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35. Is welding permitted on axles?

1. Yes, with permission

2. No, welding on axles is not permitted

3. Only in workshops

4. Only for minor repairs

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36. What should be done to axles during ROH/POH?

1. Painted

2. Subjected to ultrasonic test (UST)

3. Replaced

4. Greased only

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37. Are elastomeric pads provided on CASNUB bogies?

1. No

2. Yes, on all types

3. Only on 22HS

4. Only on 22NLB

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38. What type of suspension is used in CASNUB bogies?

1. Air suspension

2. Long travel helical spring

3. Leaf spring

4. Rubber suspension

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39. What type of brake beam is used in CASNUB 22W(M) bogies?

1. Unit type fabricated

2. Unit Type Cast Steel brake Beam suspended by hangers

3. Disc brake

4. Integral cast beam

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40. What type of brake beam is used in most CASNUB bogies except 22W(M)?

1. Suspended cast steel brake beam

2. Unit type fabricated brake beam supported in pockets

3. Hanger type brake beam

4. Disc brake

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41. What anti-rotation feature is provided in CASNUB bogies?

1. Center pivot pin

2. Anti-rotation lugs between bolster and side frame

3. Side bearer keys

4. Friction wedges

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42. What type of side bearers are used on CASNUB bogies?

1. Constant contact type

2. Helical spring type

3. Rubber pad only

4. Friction type

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43. What is the distance between side bearers?

1. 1474 mm

2. 1500 mm

3. 1600 mm

4. 2260 mm

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44. What type of axle bearing is used on CASNUB bogies?

1. Plain journal bearing

2. Cartridge Tapered Roller Bearing

3. Spherical roller bearing

4. Cylindrical roller bearing

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45. What is the condemning wheel diameter for most CASNUB bogies?

1. 840 mm

2. 906 mm

3. 950 mm

4. 780 mm

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46. What is the new wheel diameter for most CASNUB bogies?

1. 840 mm

2. 906 mm

3. 950 mm

4. 1000 mm

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47. What is the wheelbase of CASNUB bogies?

1. 1800 mm

2. 2000 mm

3. 2200 mm

4. 2500 mm

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48. What is the gauge of CASNUB bogies?

1. 1435 mm

2. 1520 mm

3. 1676 mm

4. 1600 mm

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49. Which bogie versions were developed for high-speed operation up to 100 km/h?

1. CASNUB 22W and 22W(M)

2. CASNUB 22NL and 22NLB

3. CASNUB 22HS and 22HS (Mod-I)

4. LCCF 20(C) and LWLH25

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50. Which bogie was first fitted in BOXN wagons?

1. CASNUB 22HS

2. CASNUB 22W

3. CASNUB 22NLB

4. IRF-108HS

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