Practice Test: Question Set - 05
1. The advantages of providing a pair of tunnels as compared to only one large highway tunnel is:
- (A) Economy in
cost of construction
- (B) Avoidance of
head on collisions
- (C) Provision
of separate exit and entrance of two traffic streams
- (D) All the
above
2. The following tunnels were constructed in different countries for different purposes:
- Emperor Claudius built the first Roman tunnel
- The first highway tunnel was constructed in Hungary
- The first underground railway tunnel was constructed in Great Britain
- The first navigational tunnel was constructed in France.
- (A) 4, 1, 3, 2
- (B) 1, 4, 2, 3
- (C) 2, 3, 1, 4
- (D) 3, 2, 4, 1
3. For tunnels exceeding 300 m in length, the grade should be provided below
- (A) 50% of the
ruling gradient
- (B) 60% of the
ruling gradient
- (C) 75% of the
ruling gradient
- (D) 80% of the
ruling gradient
4. The difference of heights of the tunnels above rail tops of BG and MG tracks is kept
- (A) 0.30 m
- (B) 0.45 m
- (C) 0.60 m
- (D) 0.75 m
5. The most suitable soil for compressed air tunnelling is
- (A) Silt
- (B) Sand
- (C) Clay
- (D) Gravel
6. The following operations are required for tunnelling in rocky terrain:
- Removing the foul gases
- Marking the tunnel profile
- Setting up and drilling
- Checking misfire
- Mucking
- (A) 1, 2, 3, 4,
5
- (B) 2, 3, 5, 4,
1
- (C) 4, 2, 1, 3,
5
- (D) 2, 3, 1, 4,
5
7. Assertion A: English method of tunnelling requires more time as compared to other methods of tunnelling.
Reason R: In
English method of tunnelling, the masons and excavators have to work
alternately
Select your
answer based on the coding system given below:
- (A) Both A and R
is true and R is the correct explanation of A
- (B) Both
A and R is 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
8. In the wooded bulk-head, used for mucking in steep grade tunnels,
- (A) One opening
is provided
- (B) Two openings
are provided
- (C) Three
openings are provided
- (D) No opening
is provided
9. The length of the needle beam used in needle beam method of tunnelling is usually
- (A) 2 m to 4 m
- (B) 2.5 m to 6 m
- (C) 4 m to 7 m
- (D) 5 m to 6 m
10. What is the correct sequence of the following events of construction of a shaft in rock?
- Drilling and blasting
- Timbering
- Pumping
- 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
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