Quiz easy

Carriage & Wagon Theory for LDCE(Mech)

easy wagon AB

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1. What is the slack adjustment capacity of the BMBS brake cylinder?

1. 200 mm

2. 300 mm

3. 400 mm

4. 500 mm

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2. How many brake cylinders are used per wagon in BMBS?

1. One

2. Two

3. Four

4. Six

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3. What is the diameter of BMBS brake cylinder?

1. 8 inches

2. 10 inches

3. 12 inches

4. 14 inches

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4. What is the minimum originating brake power for an End-to-End rake?

1. 90%

2. 95%

3. 100%

4. 85%

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5. What is the minimum originating brake power for a Premium rake?

1. 90%

2. 95%

3. 100%

4. 85%

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6. What is the originating brake power percentage for a CC rake?

1. 90%

2. 95%

3. 100%

4. 85%

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7. What is the maximum allowable leakage rate for brake pipe and feed pipe?

1. 0.10 kg/cm²/min

2. 0.25 kg/cm²/min

3. 0.50 kg/cm²/min

4. 1.0 kg/cm²/min

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8. What is the minimum pressure at the last wagon's brake pipe for a train up to 56 wagons?

1. 5.0 kg/cm²

2. 4.8 kg/cm²

3. 4.7 kg/cm²

4. 5.8 kg/cm²

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9. What is the piston stroke for a BOXN wagon in loaded condition?

1. 85 ± 10 mm

2. 100 ± 10 mm

3. 130 ± 10 mm

4. 135 ± 10 mm

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10. What is the piston stroke for BMBS (Knorr Bremse design) wagons?

1. 85 ± 10 mm

2. 54 ± 10 mm

3. 100 ± 10 mm

4. 130 ± 10 mm

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11. What is the brake cylinder draining time from 3.8 to 0.4 kg/cm²?

1. 18 to 30 seconds

2. 30 to 45 seconds

3. 45 to 60 seconds

4. 60 to 75 seconds

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12. What is the maximum brake cylinder pressure in empty condition for conventional wagons?

1. 3.8 ± 0.1 kg/cm²

2. 2.2 ± 0.25 kg/cm²

3. 1.5 ± 0.1 kg/cm²

4. 5.0 ± 0.1 kg/cm²

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13. What is the maximum brake cylinder pressure in loaded condition?

1. 2.2 ± 0.25 kg/cm²

2. 3.8 ± 0.1 kg/cm²

3. 5.0 ± 0.1 kg/cm²

4. 2.5 ± 0.1 kg/cm²

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14. What is the brake cylinder filling time for full service application?

1. 10 to 15 seconds

2. 18 to 30 seconds

3. 30 to 45 seconds

4. 45 to 60 seconds

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15. What is the permissible system leakage after charging?

1. 0.5 kg/cm² in one minute

2. 0.1 kg/cm² in one minute

3. 0.25 kg/cm² in one minute

4. 0.05 kg/cm² in one minute

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16. What is used to perform a Single Wagon Test without a locomotive?

1. A portable device called "Test Rig"

2. Hand pumps

3. The train's own compressor

4. Gravity

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17. When is a "Single Wagon Test" performed?

1. Every day

2. On sick wagons or when a subassembly is replaced

3. Only at the factory

4. Once a year

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18. What is the permissible drop in brake cylinder pressure during leakage test?

1. 0.5 kg/cm² in 5 minutes

2. 0.1 kg/cm² in 10 minutes

3. 0.2 kg/cm² in 5 minutes

4. 0.3 kg/cm² in 10 minutes

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19. What should be the charging time for the auxiliary reservoir?

1. 260 ± 20 seconds

2. 270 ± 30 seconds

3. 250 ± 20 seconds

4. 280 ± 30 seconds

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20. What should be the charging time for the control reservoir?

1. 270 ± 30 seconds

2. 260 ± 20 seconds

3. 300 ± 20 seconds

4. 200 ± 10 seconds

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21. What is the purpose of the double release valve?

1. To apply brakes faster

2. To release brakes manually with a brief pull of the lever

3. To charge the system

4. To isolate the distributor valve

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22. In a C3W distributor valve, what does the quick service valve do?

1. Releases brakes quickly

2. Creates initial pressure drop for rapid propagation of braking

3. Charges the reservoir

4. Isolates the valve

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23. What is the maximum brake cylinder pressure limited to by the limiting device?

1. 2.2 ± 0.25 kg/cm²

2. 3.8 ± 0.1 kg/cm²

3. 5.0 ± 0.1 kg/cm²

4. 6.0 ± 0.1 kg/cm²

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24. Which new wagons will only be fitted with either C3W or KE type distributor valve?

1. All existing wagons

2. Wagons manufactured henceforth

3. Only premium wagons

4. Only CC rakes

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25. How many designs of distributor valves are in use on wagons?

1. One

2. Two

3. Three

4. Four

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26. What is the range of 'e' dimension for most wagons?

1. 500-520 mm

2. 555-575 mm

3. 600-620 mm

4. 400-450 mm

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27. What is the controlling feature in a slack adjuster?

1. e' dimension

2. A' dimension

3. Piston stroke

4. Spring force

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28. What is a slack adjuster also known as?

1. Brake cylinder

2. Brake regulator

3. Distributor valve

4. Angle cock

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29. What size choke is fitted in the Train Manager's emergency brake valve?

1. 3 mm

2. 4 mm

3. 5 mm

4. 6 mm

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30. What is the purpose of the Train Manager's emergency brake valve?

1. To apply brakes from the locomotive

2. To allow the Train Manager to initiate brake application in an emergency

3. To release brakes manually

4. To charge the system

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31. What is provided at the bottom of the auxiliary reservoir to drain condensate?

1. A valve

2. A drain plug or drain cock

3. A filter

4. A pressure gauge

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32. How is the dirt collection action achieved?

1. By filtration only

2. By centrifugal action

3. By magnetic attraction

4. By gravity

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33. What is the purpose of the dirt collector?

1. To collect water

2. To trap dust and foreign matter before it enters the distributor valve

3. To increase air pressure

4. To lubricate the system

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34. What brings the brake rigging back to its original position during release?

1. Air pressure

2. Compression spring in the brake cylinder

3. Gravity

4. The Loco Pilot

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35. What component actually applies mechanical force to the brake shoes?

1. Distributor valve

2. Brake cylinder

3. Auxiliary reservoir

4. Angle cock

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36. What happens when the cut off angle cock handle is placed perpendicular to the pipe?

1. Air flows faster

2. The passage of inlet air is closed and outlet air is vented

3. The pressure doubles

4. The brakes apply

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37. In which position should the cut off angle cock handle be for it to be open?

1. Perpendicular to the pipe

2. Parallel to the pipe

3. At 45 degrees

4. Vertically down

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38. What is provided at the ends of brake pipes to facilitate coupling and uncoupling?

1. Distributor valve

2. Cut off angle cock

3. Brake cylinder

4. Dirt collector

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39. What are the couplings engraved with for easy identification?

1. Serial number

2. The letter BP

3. The wagon number

4. The date

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40. What is used to connect brake pipes of successive wagons?

1. Steel rods

2. Flexible hoses

3. Welding

4. Bolts

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41. What is housed in the intermediate piece (sandwich piece)?

1. The brake cylinder

2. The isolating cock for the distributor valve

3. The auxiliary reservoir

4. The dirt collector

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42. What does the common pipe bracket allow without disturbing pipe connections?

1. Changing the wheels

2. Removing the distributor valve for repair

3. Draining the reservoir

4. Painting the wagon

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43. What color are FP coupling heads painted?

1. Green

2. White

3. Yellow

4. Black

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44. What color are BP coupling heads painted?

1. White

2. Yellow

3. Green

4. Red

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45. To what pressure is the auxiliary reservoir charged in a twin pipe system?

1. 4.0 kg/cm²

2. 5.0 kg/cm²

3. 6.0 kg/cm²

4. 7.5 kg/cm²

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46. To what pressure is the auxiliary reservoir charged in a single pipe system?

1. 4.0 kg/cm²

2. 5.0 kg/cm²

3. 6.0 kg/cm²

4. 7.5 kg/cm²

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47. What is the function of the auxiliary reservoir?

1. To store water

2. To feed dry compressed air to the brake cylinder

3. To filter the air

4. To connect the pipes

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48. Which component is known as the "heart of the air brake system"?

1. Brake cylinder

2. Auxiliary reservoir

3. Distributor valve

4. Cut off angle cock

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49. What are the two forms in which both Direct and Graduated releases are available?

1. Single pipe and Twin pipe

2. Large pipe and Small pipe

3. Metal pipe and Rubber pipe

4. Long pipe and Short pipe

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50. On what basis is the air brake system classified?

1. Size of the pipe

2. Type of release (Direct or Graduated)

3. Color of the components

4. Age of the system

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