Railway Engineering Set 8 MCQs

Q1 | An extra 7.5 cm ballast width is not provided on outer side on a curve, if its degree is

6°

5°

4°

3°

Q2 | Standard size of wooden sleeper for Broad Gauge track is

275 × 25 × 13 cm

180 × 20 × 11.5 cm

225 × 23 × 13 cm

250 × 26 × 12 cm

Q3 | By interchanging gibs and cotters of a pot sleeper, gauge may be slackened by

1.2 mm

2.2 mm

3.2 mm

4.2 mm

Q4 | The main function of sleepers, is

to support rails

to hold rails at correct gauge

to distribute load from the rails to ballast

all the above

Q5 | The limiting value of cant gradient for all gauges is

1 in 360

1 in 720

1 in 1000

1 in 1200

Q6 | The spike commonly used to fix rails to wooden sleepers in Indian railways, is

dog spike

screw spike

round spike

all the above

Q7 | Track construction involves preparation of

sub-grade

plate laying

ballasting

all the above

Q8 | According to Indian Railway Board, no diamond crossing should be flatter than

1 in 6

1 in 8½

1 in 12

1 in 16

Q9 | Smith diamond is provided if the angle of diamond is less than

2°

4°

6°

8°

Q10 | 60 R rails are mostly used in

broad gauge

metre gauge

narrow gauge

none of the above

Q11 | A welded rail joint is generally

supported on a sleeper

supported on a metal plate

suspended

none of these

Q12 | If the standard length of a crossing is 480 cm, the number of crossing is

1 in 8½ of b.g.

1 in 8½ of m.g.

both (a) and (b)

none of these

Q13 | Width of ballast section for Broad Gauge is

1.83 m

2.25 m

3.35 m

4.30 m

Q14 | Minimum length of a transition curve required for

2° curves for a maximum permissible speed of 135 km/hr, is 220 metres

4° curves for a maximum permissible speed of 95 km/hr, is 220 metres

6° curves for a maximum permissible speed of 80 km/hr, is 220 metres

all the above

Q15 | For points and crossings, maximum size of ballast, is

50 mm

40 mm

30 mm

25 mm

Q16 | Which of the following methods of designation of crossing is mostly used in India?

center line method

right angle method

isosceles angle method

none of the above

Q17 | For calculating the length of curve lead (C.L.), the correct formula is

c.l. = g. /2

c.l. = ig)

c.l. = 2 gn

all the above

Q18 | In a railway track, permissible gauge with tolerance under loaded condition, is

g + 0.1 mm

g + 1.5 mm

g - 1.0 mm

g - 1.5 mm

Q19 | Yellow light-hand signal indicates

stop

proceed

proceed cautiously

none of the above

Q20 | The first Indian railway was laid in

1775

1804

1825

1853

Q21 | Sand may be used as ballast for

wooden sleepers

steel sleepers

cast iron sleepers

all the above

Q22 | What will be the curve lead for a 1 in 8.5 turnout taking off from a straight broad gauge track?

28.49 m

21.04 m

14.24 m

7.45 m

Q23 | A scissors cross-over consists of

two pairs of points, four acute angle crossings and two obtuse angle crossings

four pairs of points, four acute angle crossings and four obtuse angle crossings

four pairs of points, six acute angle crossings and two obtuse angle crossings

two pairs of points, six acute angle crossings and four obtuse angle crossings

Q24 | The effective bearing area of all types of sleepers, is

0.40 m2

0.42 m2

0.44 m2

0.46 m2

Q25 | The cross-sectional area of 52 kg flat footed rail is

6155 mm²

6615 mm²

7235 mm²

7825 mm²