Railway Bridge And Tunnel Engineering Set 6 MCQs

Q1 | The check rails are placed opposite the crossing so that

It is symmetrically placed opposite nose of crossing

Its one-third length is ahead of the nose of crossing

Its two-third length is ahead of the nose of crossing

Its three fourth length is ahead of the nose of crossing

Q2 | Consider the following surveys.1. Reconnaissance survey2. Preliminary survey3. Traffic survey4. Location surveyThe correct sequence in which these surveys are conducted before the alignment of a track is finalised is

1, 3, 2, 4

1, 3, 4, 2

3, 1, 4, 2

3, 1, 2, 4

Q3 | Check rails are provided on inner side of inner rails if sharpness of a B.G. curve, is more than

3°

5°

6°

8°

Q4 | Largest percentage of material in the rail is in its

Head

Web

Foot

Head and foot both

Q5 | The spread between the point and splice rails at a distance of 4.25 m is 50 cm. The sizeof the crossing is

1 in 6

1 in 8½

1 in 12

1 in 16

Q6 | Packing of ballast is done

Near the ends of sleepers

On the shoulders

Under sleepers

Between two rails

Q7 | The total gap on both sides between the inside edges of wheel flanges and gauge faces of the rail is kept as

10 mm

13 mm

16 mm

19 mm

Q8 | The rail section which is not used on Indian Broad Gauge tracks, is

35 R

40 R

45 R

55 R

Q9 | In a diamond crossing, numbers of noses are

2

3

4

6

Q10 | Number of cotters used in CST-9 sleepers is

2

3

4

5

Q11 | In Indian railways, plate laying is usually done by

Side method

Telescopic method

American method

All the above

Q12 | Pick up the correct statement from the following:

The line which connects a number of parallel tracks, and also provides an access to main track, is called a gathering line

With a diagonal gathering line, the length of the siding decreases with increase of its distance from main track

To have sidings of same length, a diagonal line is laid at one end and a parallel gathering line at the other end

All the above

Q13 | A Broad Gauge branch line takes off as a contrary flexure from a main line. If the superelevation required for branch line is 10 mm and cant deficiency is 75 mm, the super-elevation to be actually provided on the branch line will be

10 mm

64 mm

85 mm

65 mm

Q14 | The angle between the gauge faces of the stock rail and tongue rail, is called

Switch angle

Angle of crossing

Angle of turnout

None of these

Q15 | In permanent way, ballast

Transfers load from sleepers to the formation

Provides an elastic bed to the track

Provides a drainage of track

All the above

Q16 | Which of the following devices is used to transfer the wagons or locomotives to and from parallel tracks without any necessity of shunting?

Triangle

Turntable

Traverser

Scotch block

Q17 | If absolute levels of rails at the consecutive axles A, B, and C separated by 1.8 metres are 100.505 m, 100.530 m, and 100.525 m respectively, the unevenness of rails, is

0.065 m

0.055 m

0.045 m

0.035 m

Q18 | Spacing of sleepers

Throughout the length of a rail is kept uniform

Near rail joints, is kept closer

At the middle of rails, is kept closer

None of these

Q19 | For a 8° curve track diverging from a main curve of 5° in an opposite direction in the layout of a broad gauge yard, the cant to be provided for the branch track for maximum speed of 45 km/h on the main line and 'G' = 1.676 m is (Permitted cant deficiency for the main line = 7.6 cm)

0.168 cm

-0.168 cm

7.432 cm

7.768 cm

Q20 | Distance between the inner rail and check rail provided on sharp curve, is

40 mm

42 mm

44 mm

46 mm

Q21 | 30 m long rails are used in

India

U.K.

Russia

U.S.A.

Q22 | The load on each axle of a locomotive is 22 tonnes. If the coefficient of friction is 0.2, then the hauling capacity due to 3 pairs of driving wheels will be

26.41

19.81

13.21

6.61

Q23 | Overall depth of a dog spike, is

120.6 mm

155.90 mm

135 mm

150 mm

Q24 | To prevent creep in rails, the steel sleepers are fixed with rails by clips, bolts and

One key

Two keys

Three keys

Four keys

Q25 | 52 kg rails are mostly used in

Broad Gauge

Metre Gauge

Narrow Gauge

Both (A) and (B)