Railway Bridge And Tunnel Engineering Set 2 MCQs

Q1 | Lead of crossing is the distance from the

Heel of the switch to the toe of the switch

Heel of the switch to the theoretical nose of the crossing

Toe of the switch to the theoretical nose of crossing

Toe of the switch to the actual nose of crossing

Q2 | The place where a railway line and a road cross each other at the same level, is known as

Cross over

Railway junction

Road junction

Level crossing

Q3 | If the stock rails are B.H. rails, the type of switch generally provided, is

Articulated

Undercut

Over riding

Straight cut

Q4 | The object of providing a point lock is

To ensure that each switch is correctly set

To ensure that the point may not be operated while the train is on it

To detect any obstruction between and tongue rail

None of the above

Q5 | Minimum composite sleeper index for wooden sleepers used in cross-overs, is

1152

1252

1352

1452

Q6 | The rails get out of their original positions due to insufficient expansion gap. This phenomenon is known

Hogging

Buckling

Creeping

None of these

Q7 | When semaphore and warner are installed on the same post, then the stop indication is given when

Both arms are horizontal

Semaphore arm lowered but warner arm horizontal

Both semaphore and warner arms lowered

None of the above

Q8 | The standard dimensions of a wooden sleeper for M.G. railway track are

2.74 m × 25 cm × 13 cm

1.83 m × 20 cm × 11 cm

1.52 m × 15 cm × 10 cm

1.75 m × 20 cm × 12 cm

Q9 | To avoid the damage of nose of crossing, the wing rails are ramped so that nose of crossing remains at a lower level by

3 mm

4 mm

5 mm

6 mm

Q10 | Wear of rails is maximum in weight of

Tangent track

Sharp curve

Tunnels

Coastal area

Q11 | Degree of a railway curve is defined as number of degrees subtended at the centre of acurve by

10 m

15 m

20 m

30.5 m

Q12 | For even distribution of load through ballast, load dispersal is assumed as

30° to the vertical

45° to the vertical

60° to the vertical

None of these

Q13 | For a sleeper density of (n + 5), the number of sleepers required for constructing a broadgauge railway track of length 650 m is

975

918

900

880

Q14 | Mr. W. Simms, the consulting Engineer to the Government of India recommended the gauge for Indian railways

1.435 m as adopted in England

1.800 m as per Indian conditions

1.676 m as a compromise gauge

1.000 m as a standard gauge

Q15 | The distance between theoretical nose of crossing and actual nose of crossing forpractical purposes, is

Q16 | The rail is designated by its

Length

Weight

Cross-section

Weight per unit length

Q17 | Best ballast contains stones varying in size from

1.5 cm to 3 cm

2.0 cm to 4 cm

2.0 cm to 5 cm

2.5 cm to 6 cm

Q18 | A turn-in-curve is defined as

A curve introduced between two straights

A reverse curve

A reverse curve introduced in continuity of a turn out

A spiral transition curve

Q19 | Ordinary rails are made of

Mild steel

Cast iron

Wrought iron

High carbon steel

Q20 | In India the rails are manufactured by

Open hearth process

Duplex process

Both (a) and (b)

Neither (a) nor (b)

Q21 | Pick up the incorrect statement from the following. Required tilt of 1 in 20 is provided

To the tops of rails

At rail seats in bearing plates

At rail seats in chairs

At rail seats in metal sleepers

Q22 | The formation width for a railway track depends on the(i) Type of gauge(ii) Number of tracks to be laid side by side(iii) Slope of sides of embankment or cuttingThe correct answer is

Only (i)

Both (i) and (ii)

Both (i) and (iii)

(i), (ii) and (iii)

Q23 | If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is

10 chains

12 chains

14 chains

16 chains

Q24 | Main disadvantage of steel sleepers, is:

It gets rusted quickly

Its lugs sometimes get broken

Its lugs sometimes get split

All the above

Q25 | For a Broad Gauge route with (M + 7) sleeper density, number of sleepers per rail length is

18

19

20

21