Tunnel Engineering — Part 2 MCQs with Explanations

1, 2, 3, 4 is the correct answer to “For transferring the tunnel alignment through shafts, we adopt the following steps: 1.Hanging two or more plumb lines in the shaft 2.Determining the bearing of the plumb lines i.e. plumb plane 3.Suspending a 35 kg weight by each plumb line 4.Immersing the weights of both the plumb lines in the buckets containing water The correct sequence of steps is:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Tunneling can be continuous and the work can be expedited is the correct answer to “Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction”. This question is standard in competitive examination syllabi for Tunnel Engineering.

All the above is the correct answer to “Which one of the following methods is generally adopted for tunnelling in firm ground”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Liner plate is the correct answer to “Which of the following is not a component of the shield”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Removal of muck from the heading is very easy is the correct answer to “Which one of the following statements is not correct for heading and benching method of tunnelling”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Firing of head holes is done just before the bench holes are fired is the correct answer to “Which one of the following statements is not correct with regard to heading and henching method of tunnelling”. This question is standard in competitive examination syllabi for Tunnel Engineering.

1, 6, 2, 5, 3, 4, 7 is the correct answer to “What is the correct sequence of the following events in rock tunnelling? 1. Marking tunnel profile 2. Loading explosives and blasting 3. Checking misfire 4. Mucking 5. Removing foul gas 6. Setting up and drilling 7. Guniting Select the correct answer”. This question is standard in competitive examination syllabi for Tunnel Engineering.

The grass hopper method is the correct answer to “An overhead track on a large truss frame is required in case of car changer by”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Ammonia dynamite is the correct answer to “Pick up the explosive used for tunnelling in soft rocks from the following:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

All the above is the correct answer to “Pick up the mechanical ventilation method used for tunnels from the following:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

All of the above is the correct answer to “Pick up the correct statement regarding drilling a tunnel from the following:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

2N + 2 is the correct answer to “If ‘N’ is the number of shafts used, then the total number of faces available for attacking the excavation and construction in tunnels are”. This question is standard in competitive examination syllabi for Tunnel Engineering.

15 meters depth is the correct answer to “For highways, tunnelling is preferred to if the open cut exceeds:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Soft ground is the correct answer to “Forepoling method is generally adopted for tunnelling in:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

All the above is the correct answer to “A tunnel is found more advantageous as compared to the alternate routes because it:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

(i), (ii) and (iv) are correct is the correct answer to “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”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Rock terrain is the correct answer to “Concrete lining is provided concurrently with the driving operation in case of”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Excavation being done along the periphery is the correct answer to “In “full face” method of constructing tunnels, the first operation relates to”. This question is standard in competitive examination syllabi for Tunnel Engineering.

3, 2, 6, 5, 1, 4 is the correct answer to “The following operations are generally employed for tunnelling in hard rock. 1.Removing ground water, 2.Loading holes and firing the explosive 3.Setting up and drilling 4.Grouting and lining 5.Removing muck 6.Ventilation and removing explosion dust The correct sequence is:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

4, 1, 3, 2 is the correct answer to “In the given figure drill holes, heading, mucking and benching are numbered as 1, 2, 3, 4; The correct sequence is:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Only (i) is correct is the correct answer to “American method of tunnelling (i) Is suitable for large sized tunnels (ii) Is not suitable for railway or highway tunnels (iii) Requires heavy timbers”. This question is standard in competitive examination syllabi for Tunnel Engineering.

82 D is the correct answer to “If ‘D’ is the diameter of tunnel in meters, then the thickness of lining in mm, as per the empirical formula is given by”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Increases by 2.25 times is the correct answer to “As compared to a single free face, if a charge of explosive is placed equidistant from two faces, then the yield”. This question is standard in competitive examination syllabi for Tunnel Engineering.

A is true but R is false is the correct answer to “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”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Both A and R is true and R is the correct explanation of A is the correct answer to “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”. This question is standard in competitive examination syllabi for Tunnel Engineering.

Rock is the correct answer to “Drift method of tunneling is used to construct tunnels in”. This question is standard in competitive examination syllabi for Tunnel Engineering.

1, 4, 2, 3 is the correct answer to “The following tunnels were constructed in different countries for different purposes: 1.Emperor Claudius built the first Roman tunnel 2.The first highway tunnel was constructed in Hungary 3.The first underground railway tunnel was constructed in Great Britain 4.The first navigational tunnel was constructed in France. The correct chronological development of these tunnels is:”. This question is standard in competitive examination syllabi for Tunnel Engineering.

All of the above is the correct answer to “Pick up the correct statement from the following during tunnel excavation,”. This question is standard in competitive examination syllabi for Tunnel Engineering.

All of the above is the correct answer to “In case of drift method of tunnelling, the drift may be excavated at”. This question is standard in competitive examination syllabi for Tunnel Engineering.