Which of the following lining material is useful for shield driven tunnels in sub aqueous regions?

LohaHridoy
  1. Stone masonry
  2. Timber
  3. Cast iron
  4. Cement concrete

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Answer: Option 3

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Study the following statements.i) The displacement method is more useful when degree of kinematic indeterminacy is greater than the degree of static indeterminacy.ii) The displacement method is more useful when degree of kinematic indeterminacy is less than the degree of static indeterminacy.iii) The force method is more useful when degree of static indeterminacy is greater than the degree of kinematic indeterminacy.iv) The force method is more useful when degree of static indeterminacy is less than the degree of kinematic indeterminacy.The correct answer is?

Answer: Option 4 Let'

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Assertion A: When rock conditions are favorable, it will not be necessary to take up concrete lining concurrently with the driving operations till the full length of the tunnel has been driven through rock.Reason R: A tunnel through rock, hard or soft, does not need any concrete liningSelect your answer based on the coding system given below:?

Answer: Option 3 Let'

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Which of the following methods of tunneling is used for long tunnels at great depths?

Answer: Option 3 Let'

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Which one of the following linings is suitable for shield driven tunnels particularly in the sub-aqueous regions?

Answer: Option 4 Let'

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

Answer: Option 4 Let'

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Which one of the following is a component of a shield for tunneling?

Answer: Option 4 Let'

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

Answer: Option 2 Let'

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The needle beam method of tunnelling (i) Is suitable for soils in which roof can stand for few minutes without support (ii) Is suitable for brick lining (iii) Is suitable for concrete lining (iv) Requires large number of trench jacks?

Answer: Option 2 Let'

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An orthotropic material is a special class of anisotropic material, which is described by their properties in three perpendicular directions. An example of orthotropic material is?

Answer: Option 3 Let'

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For concentrating an aqueous solution of a material like anhydrous Na₂SO₄, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator.?

Answer: Option 2 Let'

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