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21
High pressure grouting is generally restored for concreting in the lining if the rock strata is:
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Answer: Option D
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22
The cut of a tunnel face is shown in given figure. This is called
Tunnel Engineering mcq question image
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Answer: Option A
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23
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:
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Answer: Option D
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24
The length of the needle beam used in needle beam method of tunnelling is usually
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Answer: Option D
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25
Railway tunnels are generally
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Answer: Option A
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26
The method of draining in the tunnels, is generally known as
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Answer: Option D
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27
In the wooded bulk-head, used for mucking in steep grade tunnels,
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Answer: Option B
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28
Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than
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Answer: Option B
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29
For B.G. single track railway, the height of the tunnel above top of rails should be
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Answer: Option C
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30
A good blast with a good yield is obtained if the cut hole is
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Answer: Option B
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