Practice Tunnel Engineering Multiple Choice Questions Quiz-2 - MCQGeeks.com

Q.1

Which of the following is not a component of the shield?

Propelling jacks
Liner plate
Hood
Tail

Q.2

Which one of the following statements is not correct for heading and benching method of tunnelling?

Drilling and mucking can be done simultaneously
Benching provides a platform for working on heading
Removal of muck from the heading is very easy
None of these

Q.3

The method of draining in the tunnels, is generally known as

Foredrainage
Dewatering
Permanent drainage
All of the above

Q.4

In the wooded bulk-head, used for mucking in steep grade tunnels,

One opening is provided
Two openings are provided
Three openings are provided
No opening is provided

Q.5

High pressure grouting is generally restored for concreting in the lining if the rock strata is:

Highly fissured
Poor
Likely to get seepage of water
All of the above

Q.6

The difference of heights of the tunnels above rail tops of BG and MG tracks is kept

0.30 m
0.45 m
0.60 m
0.75 m

Q.7

For hauling muck from the tunnel, the following type of muck-car is used:

Muck box
Side dump car
U-bottom
All of these

Q.8

In Belgium method of tunnelling

Construction of side walls is completed before invert and roof arch are built
Construction of roof arch is completed before side walls and inverts are built
Construction of invert is completed before side walls and roof arch are built
Construction of invert and side walls is completed before roof arch is built

Q.9

The advantages of providing a pair of tunnels as compared to only one large highway tunnel is:

Economy in cost of construction
Avoidance of head on collisions
Provision of separate exit and entrance of two traffic streams
All the above

Q.10

Which one of the following methods is adopted for permanent drainage of tunnels?

Provision of longitudinal drains
Continuous open drains
Concrete lining
All the above

Q.11

Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than

2 m
3 m
4 m
5 m

Q.12

For B.G. single track railway, the height of the tunnel above top of rails should be

5.5 m to 5.8 m
5.8 m to 6.2 m
6.7 m to 7.3 m
7.3 m to 7.5 m

Q.13

The following operations are required for tunnelling in rocky terrain:
1.Removing the foul gases
2.Marking the tunnel profile
3.Setting up and drilling
4.Checking misfire
5.Mucking
The correct sequence is:

1, 2, 3, 4, 5
2, 3, 5, 4, 1
4, 2, 1, 3, 5
2, 3, 1, 4, 5

Q.14

The length of the needle beam used in needle beam method of tunnelling is usually

2 m to 4 m
2.5 m to 6 m
4 m to 7 m
5 m to 6 m

Q.15

"Consider the following situations.
1.Soil is soft.
2.Volume of existing surface traffic on the alignment is heavy.
3.Track is at a deeper level.
4.Water table is high.
In the construction of Metro Railways, “Cut and Cover” method of construction is suitable in situations listed at "

1 and 2
1 and 3
1 and 4
2 and 3

Q.16

For tunnels exceeding 300 m in length, the grade should be provided below

50% of the ruling gradient
60% of the ruling gradient
75% of the ruling gradient
80% of the ruling gradient

Q.17

In case of railways,

A detour round the hill is preferred
A open cut is preferred
Tunnelling is preferred
All the above

Q.18

Which one of the following methods of tunnelling does not require the use of time bearing?

Linear plate method
Shield method
Compressed air method
All of these

Q.19

To attain the required shape of the tunnel section, we use:

Easers
Trimmers
Cut holes
Chisels

Q.20

The most suitable soil for compressed air tunnelling is

Silt
Sand
Clay
Gravel

Q.21

Which one of the following statements is not correct in respect of setting of an inclined tunnel?

Reference points are constructed at every 300 m
The alignment is fixed from upper/lower apex point
The level of the invert at the heading is marked by a tape
None the above

Q.22

Which one of the following methods is generally used for the layout of the muck-car tracks?

The grass hopper method
Passing track method
The cherry picker
All the above

Q.23

The concentration of the dust particles of the size 0.5 to 5 microns adjacent to the working face should not be more than

200 particles/cm3
250 particles/cm3
300 particles/cm3
450 particles/cm3

Q.24

For B.G. single track, the section of the tunnel must have a width

4.2 m to 4.5 m
4.5 m to 4.8 m
4.9 m to 5.5 m
5.5 m to 5.8 m

Q.25

What is the correct sequence of the following events of construction of a shaft in rock?
1.Drilling and blasting
2.Timbering
3.Pumping
4.Mucking
Select the correct answer using the codes given below Codes:

1, 2, 3, 4
1, 4, 2, 3
2, 1, 4, 3
2, 4, 1, 3

Q.26

A good blast with a good yield is obtained if the cut hole is

Normal to face
Inclined at 45° to the face
Inclined at 15° to the face
Inclined at 30° to the face

Q.27

Railway tunnels are generally

Polycentric
Rectangular
Parabolic
Circular

Q.28

Which one of the following tunneling methods is used for laying underground sewers?

Needle beam method
Army method
German method
Italian method

Q.29

In compressed air tunnelling, the volume of free air provided is

6 m³ per second per m² of face area
6 m³ per minute per m² of face area
20 m³ per minute per m² of face area
6 m³ per hour per m² of face area

Q.30

For full face method, the excavation to be done is generally divided into

Two sections
Three sections
Four sections
Five sections

0 h : 0 m : 1 s