Railway Question Bank For JE/Tech/Helper/C&W Air Brake
01. Capacity of air reservoir (AR) of the coach is –
(a) 150 Lit.
(b) 200 Lit
(c) 250 Lit.
(d) 300 Lit.
02. ‘A’ dimension of a passenger train (Non AC coach) is –
(a) 14± 2 mm
(b) 16+2/-0 mm
(c) 16± 4 mm
(d) 18 ± 2 mm
03. In an AC coach, ‘A’ dimension should be –
(a) 18± 2 mm
(b) 20± 2 mm
(c) 22± 2 mm
(d) 22+2/-0 mm
04. In a passenger train ‘e’ dimension is –
(a) 378± 20 mm
(b) 375±25 mm
(c) 370±10 mm
(d) 380±20 mm
05. In the passenger train, the diameter of brake pipe & feed pipe is –
(a) 20.0 mm
(b) 25.0 mm
(c) 28.0 mm
(d) 30.0 mm
06. In the passenger train, the diameter of branch pipe is –
(a) 15.0 mm
(b) 18.0 mm
(c) 20.0 mm
(d) 22.0 mm
07. What is the diameter of branch pipe in between PEAV to PEASD?
(a) 10.0 mm
(b) 25.0 mm
(c) 30.0 mm
(d) 20.0 mm
08. During full service application, Brake pipe pressure is dropped to –
(a) 2.0 Kg/cm2
(b) 1.0 Kg/cm2
(c) 3.0 Kg/cm2
(d) 1.5 Kg/cm2
09. At originating station the brake power percentage for mail/express train should be –
(a) 85%
(b) 90%
(c) 100%
(d) 75%
10. Cut off angle cock can be fitted to-
(a) FP
(b) BP
(c) BP&FP both
(d)None of the above
11. What is the piston stroke of air brake coaching train fitted with modified horizontal
lever?(a) 60±10 mm
(b) 80±10 mm
(c) 85±15 mm
(d) 85±5 mm
12. What is the diameter of bogie mounted brake cylinder?
(a) 220 mm
(b) 210 mm
(c) 203 mm
(d) 200 mm
13. The brake cylinder diameter of conventional air brake system is –
(a) 205 mm
(b) 355 mm
(c) 325 mm
(d) 305 mm
14. The rate of air leakage in single car testing should not be more then –
(a) 0.02 Kg/cm2/min
(b) 1.0 Kg/cm2/min
(c) 0.2 Kg/cm2/min
(d) 0.1 Kg/cm2/min
15. In emergency application the brake cylinder pressure rises from 0-3.6 kg/cm2
in –
(a) 15-20 secs(b) 5-10 sec
(c) 3-5 secs
(d) 8-10 secs
16. Check valve with choke allows air from –
(a) BP to FP
(b) FP to CR
(c) FP to AR
(d) AR to BC
17. When brake is manually released by QRV, which pressure will be vent out?
(a) BC pressure
(b) AR pressure
(c) BP pressure
(d) CR pressure
18. What is the pressure of control reservoir in coaching trains?
(a) 6.0 Kg/cm2
(b) 5.0 Kg/cm2
(c) 6.0 to .2 Kg/cm2
(d) 4.8 Kg/cm2
19. In coaching trains, auxiliary reservoir is charged to –
(a) 5.0 Kg/cm2
(b) 6.0 Kg/cm2
(c) 4.8 Kg/cm2
(d) 5.5 Kg/cm2
20. Reduction in BP pressure for minimum application is –
(a) 1.0 to1.5 Kg/cm2
(b) 0.8 to 1.0 Kg/cm2
(c) 0.5 to 0.8 Kg/cm2
(d) 0.1 to 05 Kg/cm2
21. Reduction in BP pressure for service application is –
(a) 1.0 to 05 Kg/cm2
(b) 1.0 to 1.5 Kg/cm2
(c) 0.5 to 0.8 Kg/cm2
(d) 0.8 to 1.0 Kg/cm2
22. Reduction in BP pressure for full service application is –
(a) 1.0 to 1.5 Kg/cm2
(b) 0.8 to 1.0 Kg/cm2
(c) 0.5 to 0.8 Kg/cm2
(d) 0.1 to 05 Kg/cm2
23. Reduction in BP pressure for emergency application is –
(a) 1.0 to 1.5 Kg/cm2
(b) 1.5 to 3.8 Kg/cm2
(c) 0.5 to 0.8 Kg/cm2
(d) 3.8 to 5..0 Kg/cm2
24. How many dirt collectors are fitted with under frame mounted air brake system on every
coach?(a) Two
(b) One
(c) Three
(d) None of the above
25. What is the choke diameter of guard’s emergency brake valve?
(a) 4.0 mm
(b) 5.0 mm
(c) 6.0 mm
(d) 8.0 mm
26. What type of slack adjuster is used in passenger coaches?
(a) DRV-600
(b) None
(c) IRSA-450
(d) IRSA- 600
27. For testing C3W DV, the AR charging time from 0 to 4.8 kg/cm2 is –
(a) 170 ± 10 sec
(b) 175 ± 30 sec
(c) 280 ± 30 sec
(d) 210 ± 20 sec
28. For testing KE type DV, the AR charging time from 0 to 4.8 kg/cm2 is-
(a) 160 to 210 sec
(b) 210 to 260 sec
(c) 260 to 280 sec
(d) 180 to 200 sec
29. For testing C3W DV, the CR charging time from 0 to 4.8 kg/cm2 is –
(a) 170 ± 10 sec
(b) 165 ± 20 sec
(c) 160 ± 10 sec
(d) 210 ± 20 sec
30. For testing KE type DV, the CR charging time from 0 to 4.8 kg/cm2 is –
(a) 170 ± 10 sec
(b) 160 ± 40 sec
(c) 160 ± 10 sec
(d) 210 ± 20 sec
31. The three-branch pipe attached to common pipe bracket, where the middle pipe leads to
(a) CR
(b) DV
(c) BC
(d) AR
32. During brake release, air from BC goes to
(a) AR
(b) CR
(c) DV
(d) Atmosphere
33. At what schedule, testing of pressure gauge and replacement of the defective gauge in SLR?
(a) IOH
(b) ‘A’ schedule
(c) ‘B’ Schedule
(d) Special schedule
34. The type of dirt collector, used in bogie mounted passenger coach is –
(a) 2- way
(b) 4-way
(c) 3-way
(d) single way
35. When DV is working condition the position of DV handle is –
(a) Horizontal
(b) Inclined
(c) Vertical
(d) Parallel
36. The en-route brake power percentages of passenger BG coaching train is –
(a) 85%
(b) 90%
(c) 100%
(d) Not specified
37. What is the capacity of control reservoir of passenger coach?
(a) 6.0 litre
(b) 7.0 litre
(c) 9.0 litre
(d)10.0 litre
38. What should be the effective maximum pressure in brake cylinder during full service
application is(a) 3.6 ± 0.1 Kg/cm2
(b) 3.7 ± 0.1 Kg/cm2
(c) 3.8 ± 0.1 Kg/cm2
(d) 4.1 ± 0.1Kg/cm2
39. DV is directly mounted on –
(a) AR
(b) Brake cylinder
(c) Brake pipe
(d) Common pipe bracket
40. Which one of the following valve in DV controls charging of CR?
(a) Main valve
(b) Quick service valve
(c) Cut off valve
(d) Limiting device
41. Control reservoir in air brake system is –
(a) To control FP pressure
(b) To control DV valve
(c) To control Brake system
(d) none of the above
42. Auxiliary reservoir is assisting in –
(a) Charging of DV
(b) Charging of BP
(c) Sending air to BC
(d) Charging of CR
43. Dirt Collector should be cleaned within –
(a) At the time of IOH
(b) At the time of ‘A’ schedule
(c) At the time of POH
(d) At the time of ‘B’ schedule
44. In air brake system, brake should apply when the rate of drop of air pressure in BP is –
(a) 0.6 Kg/cm2/min in 6 sec
(b) 0.3 Kg/cm2 in one sec
(c) 0.4 Kg/cm2 in one sec
(d) 0.1 Kg/cm2 in one sec
45. In air brake system, brake should not apply when the rate of drop of air pressure in BP is-
(a) 0.3 Kg/cm2 in 60 sec
(b) 0.4 Kg/cm2 in 4 sec
(c) 0.5 Kg/cm2 in 30 sec
(d) 0.8 Kg/cm2 in 8 sec
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