Railway Bridge And Tunnel Engineering Set 11 MCQs

Q1 | A wing rail is renewed or reconditioned if its maximum vertical wear is

9.5 m

7.5 m

5.5 m

5.0 m

Q2 | The steepest gradient permissible on a 2.5° curve for Broad Gauge line having ruling gradient of 1 in 200 is

1 in 250

1 in 222

1 in 235

1 in 275

Q3 | The tread of wheels is provided an outward slope of

1 in 10

1 in 15

1 in 20

1 in 25

Q4 | When the rail ends rest on a joint sleeper, the joint is termed as

Supported rail joint

Suspended rail joint

Bridge joint

Base joint

Q5 | To prevent percolation of water into formation, moorum is used as a blanket for

Black cotton soil

Sandy soil

Clayey soil

All the above

Q6 | Number of fish bolts per fish plate is

2

4

5

6

Q7 | For flat bottom sleepers, maximum size of ballast, is

50 mm

40 mm

33 mm

25 mm

Q8 | Which of the following turnouts is most commonly used for goods train on IndianRailways?

1 in 8'/2

1 in 12

1 in 16

1 in 20

Q9 | On Indian Railways standard length of rails for M.G. track, is

33 ft (10.06 m)

36 ft (10.97 m)

39 ft (11.89 m)

42 ft (12.8 m)

Q10 | The nominal size of ballast used for points and crossings is

25 mm

40 mm

50 mm

10 mm

Q11 | The overall length of a turn out is the distance between the end of stock rail and

Heel of crossing

Actual nose of crossing

Throat of crossing

Toe of crossing

Q12 | The width of foot for 90 R rail section is

100 mm

122.2 mm

136.5 mm

146.0 mm

Q13 | Monnier, the inventor of R.C.C., suggested the introduction of reinforced cement concert sleepers for the railways in

1857

1867

1877

1887

Q14 | Switch angle depends on(i) Heel divergence(ii) Length of tongue rail(iii) Flange-way clearance(iv) Throw of switchThe correct answer is

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

(i) and (iv)

Q15 | Minimum packing space provided between two sleepers, is between

20 to 25 cm

25 to 30 cm

30 to 35 cm

35 to 40 cm

Q16 | Dog spikes are used for fixing rail to the

Wooden sleepers

CST-9 sleepers

Steel trough sleepers

Concrete sleepers

Q17 | Distance between inner faces of the flanges, is kept

Equal to the gauge distance

Slightly less than the gauge distance

Slightly more than the gauge distance

None of these

Q18 | Anti-creep bearing plates are provided on

Bridges and approaches

Joints

Both (A) and (B)

None of the above

Q19 | A mono-block sleeper has

Square section

Rectangular section

Trapezoidal section

Semi-circular section

Q20 | The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called

Flange-way clearance

Heel divergence

Throw of the switch

None of the above

Q21 | Coal ash (or cinder) is used in initial stages of a new construction of railway for

Wooden sleepers

Steel sleepers

Cast iron sleepers

None of these

Q22 | Normally the limiting value of cant is

G/8

G/10

G/12

G/15

Q23 | Width of the top portion of a flat footed, rail, is

69.85 mm

63.50 mm

66.77 mm

136.52 mm

Q24 | Rails are bent to correct curvature if the degree of curve, is more than

1°

2°

3°

4°

Q25 | Minimum depth of ballast prescribed of B.G. trunk lines of Indian Railways, is

20 cm

15 cm

25 cm

30 cm