Railway Engineering Objective Question Answer pdf - Set 13 - ObjectiveBooks

# Practice Test: Question Set - 13

1. The standard dimensions of a wooden sleeper for a B.G. railway track are
(A) 2.74 m × 25 cm × 13 cm
(B) 1.83 m × 20 cm × 11 cm
(C) 1.52 m × 15 cm × 10 cm
(D) 1.75 cm × 20 cm × 12 cm

2. The limiting value of cant excess for Broad Gauge is
(A) 55 mm
(B) 65 mm
(C) 75 mm
(D) 100 mm

3. Indian Railways detects the rail flow by
(A) Mitsubishi Rail flow detector
(B) Soni Rail flow detector
(C) Audi-gauge Rail flow detector
(D) Kraut Kramer Rail flow detector

4. The gradient on which an additional engine is required to negotiate the gradient, is called

5. One degree of curve is equivalent to
(A) 1600/R
(B) 1700/R
(C) 1750/R
(D) 1850/R
Where ‘R’ is the radius of curve in meters

6. If D is the distance between the parallel sidings and Î± is the angle of crossing, the distance between the noses of crossing measured parallel to the gathering line, is
(A) D tan Î±
(B) D cot Î±
(C) D sin Î±
(D) D cos Î±

7. If D is distance between centres of two parallel tracks of gauge G with entire curved leads and equal angles of crossing, total length of crossover, is
(A) √[D (4R - 2G - D)]
(B) √[D (3R - 2G -D)]
(C) √[D (3R + 2G - D)]
(D) √[D (4 + 2G - D)]

8. Which of the following mechanical devices is used to ensure that route cannot be changed while the train is on the point even after putting back the signal?
(A) Detectors
(B) Point lock
(C) Lock bar
(D) Stretcher bar

9. Pot sleepers are used if degree of the curve does not exceed
(A) 4°
(B) 5°
(C) 6°
(D) 7°

10. Burnettising is done for the preservation of
(A) Wooden sleepers
(B) Rails
(C) Ballast
(D) None of these

11. Consider the following statements:
Automatic signalling system results in
1. Greater risk
2. Higher efficiency
3. Avoidance of block instruments
4. Higher operating cost
Of these statements
(A) 1 and 2 are correct
(B) 3 and 4 are correct
(C) 1 and 4 are correct
(D) 2 and 3 are correct

12. A kink is made in stock rails, ahead of the toe of switch at a distance of
(A) 10 cm
(B) 15 cm
(C) 20 cm
(D) 30 cm

13. Rails are fixed on steel sleepers
(A) By bearing plates
(B) By dog spikes
(C) By keys in lugs or jaws
(D) None of these

14. Largest dimension of a rail is its
(A) Height
(B) Foot width