Civil Engineering Questions And Answers :: Tunnel Engineering: part1

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Civil Engineering : Tunnel Engineering QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following Civil Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.In compressed air tunneling, the volume of free air provided is
6 mJ 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

2.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 Of these statements
only (i) is correct
(i), (ii) and (iv) are correct
(i), (iii) and (iv) are correct
(i) and (ii) are correct

3.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 lining. Select your answer based on the coding system given below:
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.

4.Assertion A : English method of tunneling requires more time as compared to other methods of tunneling. Reason R : In English method of tunneling, the masons and excavators have to work alternately. Select your answer based on the coding system given below :
Both A and R are true and R is the correct explanation of A.
Both A and R are true and R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.

5.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 usiny the codes given below Codes :
1,2,3,4
1,4,2,3
2,1,4,3
2,4,1,3

More Tunnel Engineering QUESTIONS AND ANSWERS available in next pages

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