Tunnel Engineering - Interview Questions | Exam2Win

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21. 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 :

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true and R is not the correct explanation of A.

C. A is true but R is false.

D. A is false but R is true.

Explanation:

22. 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 :

A. 1,2,3,4

B. 1,4,2,3

C. 2,1,4,3

D. 2,4,1,3

Explanation:

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

A. liner plate

B. trench jack

C. stiffener

D. cutting edge

Explanation:

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

A. 2 m

B. 3 m

C. 4 m

D. 5 m

Explanation:

25. Drift method of tunnelling is used to construct tunnels in

A. soft grounds

B. rock

C. self supporting grounds

D. broken grounds

Explanation:

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