Category: Tunnel Engineering

A. 2 m
B. 3 m
C. 4 m
D. 5 m

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true

1. drilling and blasting
2. timbering
3. pumping
4. mucking

Select the correct answer using 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

A. construction of side walls is completed before invert and roof arch are built
B. construction of roof arch is completed before side walls and invert are built
C. construction of invert is completed before side walls and roof arch are built
D. construction of invert and side walls is completed before roof arch is built

A. 42 D
B. 82 D
C. 104 D
D. 124 D

i) is suitable for large sized tunnels
ii) is no,’ suitable for railway or highway tunnel’s
iii) requires heavy timbers
select the correct answer?

A. only (i) is correct
B. (i) and (iii) are correct
C. (ii) and (iii) are correct
D. (i) and (ii) are correct

(i) shot drill
(ii) diamond drill
(iii) wagon drill
(iv) churn drill
select correct answer?

A. (i) and (ii) are correct
B. (iii) and (iv) are coiTect
C. (i) and (iv) are correct
D. (ii) and (iii) are correct

(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
select the answer?

A. only (i) is correct
B. (i), (ii) and (iv) are correct
C. (i), (iii) and (iv) are correct
D. (i) and (ii) are correct

A. removal of bottom portion
B. excavation of one drift in the centre
C. removal of top portion
D. excavation being done along the periphery

A. stone masonry
B. timber
C. cast iron
D. cement concrete