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11
Which one of the following methods of tunnelling does not require the use of time bearing?
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Answer: Option D
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12
To attain the required shape of the tunnel section, we use:
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Answer: Option B
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13
The most suitable soil for compressed air tunnelling is
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Answer: Option C
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14
For full face method, the excavation to be done is generally divided into
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Answer: Option B
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15
Which one of the following linings is suitable for shield driven tunnels particularly in the sub-aqueous regions?
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Answer: Option D
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16
"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 "
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Answer: Option C
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17
For tunnels exceeding 300 m in length, the grade should be provided below
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Answer: Option C
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18
In case of railways,
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Answer: Option C
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19
Which one of the following tunneling methods is used for laying underground sewers?
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Answer: Option B
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20
In compressed air tunnelling, the volume of free air provided is
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Answer: Option B
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