Tunnel Engineering MCQ

Test your knowledge with important Tunnel Engineering MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Tunnel Engineering MCQs at Bissoy

• In case of drift method of tunnelling, the drift may be excavated at
  ক

  The centre

  খ

  The top or bottom

  গ

  The side

  ঘ

  All of the above
• Pick up the correct statement from the following during tunnel excavation,
  ক

  Oxygen should not be less than 19.5%

  খ

  Carbondioxide should not be more than 0.5%

  গ

  Hydrogen sulphide should not be more than 0.001%

  ঘ

  All of the above
• Drift method of tunneling is used to construct tunnels in
  ক

  Soft grounds

  খ

  Rock

  গ

  Self supporting grounds

  ঘ

  Broken grounds
• Assertion A: English method of tunnelling requires more time as compared to other methods of tunnelling.<br>Reason R: In English method of tunnelling, the masons and excavators have to work alternately<br>Select your answer
  ক

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

  খ

  Both A and R is true and R is not the correct explanation of A

  গ

  A is true but R is false

  ঘ

  A is false but R is true
• 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.<br>Reason R: A tunnel through rock, hard or soft, does not need any concrete lining<br>Select your answer
  ক

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

  খ

  Both A and R is true but R is not the correct explanation of A

  গ

  A is true but R is false

  ঘ

  A is false but R is true
• As compared to a single free face, if a charge of explosive is placed equidistant from two faces, then the yield
  ক

  Remain same

  খ

  Decreases

  গ

  Increases by 2.25 times

  ঘ

  Increases by 3.5 times
• If ‘D’ is the diameter of tunnel in meters, then the thickness of lining in mm, as per the empirical formula is given by
  ক

  42 D

  খ

  82 D

  গ

  104 D

  ঘ

  124 D
• American method of tunnelling<br> (i) Is suitable for large sized tunnels<br> (ii) Is not suitable for railway or highway tunnels<br> (iii) Requires heavy timbers
  ক

  Only (i) is correct

  খ

  (i) and (iii) are correct

  গ

  (ii) and (iii) are correct

  ঘ

  (i) and (ii) are correct
• In the given figure drill holes, heading, mucking and benching are numbered as 1, 2, 3, 4; The correct sequence is:<br> <img src="/images/question-image/civil-engineering/tunnel-engineering/1525415833-32.png" title="Tunnel Engineering mcq question image" alt="Tunnel Engineering mcq question image">
  ক

  4, 1, 2, 3

  খ

  1, 2, 3, 4

  গ

  4, 1, 3, 2

  ঘ

  3, 4, 1, 3
• In “full face” method of constructing tunnels, the first operation relates to
  ক

  Removal of bottom portion

  খ

  Excavation of one drift in the centre

  গ

  Removal of top portion

  ঘ

  Excavation being done along the periphery
• Concrete lining is provided concurrently with the driving operation in case of
  ক

  Rock terrain

  খ

  Soft rock

  গ

  Running soil

  ঘ

  None of these
• The needle beam method of tunnelling<br> (i) Is suitable for soils in which roof can stand for few minutes without support<br> (ii) Is suitable for brick lining<br> (iii) Is suitable for concrete lining<br> (iv) Requires large number of trench jacks
  ক

  Only (i) is correct

  খ

  (i), (ii) and (iv) are correct

  গ

  (i), (iii) and (iv) are correct

  ঘ

  (i) and (ii) are correct
• A tunnel is found more advantageous as compared to the alternate routes because it:
  ক

  Remains free from snow

  খ

  Reduces the cost by reducing the route distance

  গ

  Reduces the maintenance cost

  ঘ

  All the above
• Forepoling method is generally adopted for tunnelling in:
  ক

  Soft ground

  খ

  Firm ground

  গ

  Running ground

  ঘ

  None of these
• For highways, tunnelling is preferred to if the open cut exceeds:
  ক

  10 meters depth

  খ

  15 meters depth

  গ

  20 meters depth

  ঘ

  25 meters depth
• If ‘N’ is the number of shafts used, then the total number of faces available for attacking the excavation and construction in tunnels are
  ক

  2N

  খ

  N + 2

  গ

  2N + 1

  ঘ

  2N + 2
• Pick up the correct statement regarding drilling a tunnel from the following:
  ক

  Holes are drilled by pneumatically operated rock drills

  খ

  One drill is required for each 4 to 5 m² force area

  গ

  The diameter of the bore hole at the deepest point should be 6 mm more than the diameter of the cartridge

  ঘ

  All of the above
• Pick up the mechanical ventilation method used for tunnels from the following:
  ক

  Blowing fresh air by ducts to the face of tunnel

  খ

  Exhausting foul air by ducts from the face of the tunnel and permitting fresh air through the tunnel

  গ

  Blowing fresh air and exhausting foul air by ducts

  ঘ

  All the above
• Pick up the explosive used for tunnelling in soft rocks from the following:
  ক

  Blasting gelatine

  খ

  Special gelatine

  গ

  Ammonia dynamite

  ঘ

  Semi-gelatine
• An overhead track on a large truss frame is required in case of car changer by
  ক

  The grass hopper method

  খ

  The passing track method

  গ

  California crossing method

  ঘ

  Dixon conveyor method
• Which one of the following statements is not correct with regard to heading and henching method of tunnelling?
  ক

  Driving of tunnel is done in two portions of its section

  খ

  Driving the top portion is done in advance of the bottom portion

  গ

  The holes in head and bench are loaded together with explosive for blasting

  ঘ

  Firing of head holes is done just before the bench holes are fired
• Which one of the following statements is not correct for heading and benching method of tunnelling?
  ক

  Drilling and mucking can be done simultaneously

  খ

  Benching provides a platform for working on heading

  গ

  Removal of muck from the heading is very easy

  ঘ

  None of these
• Which of the following is not a component of the shield?
  ক

  Propelling jacks

  খ

  Liner plate

  গ

  Hood

  ঘ

  Tail
• Which one of the following methods is generally adopted for tunnelling in firm ground
  ক

  Full face method

  খ

  Top heading and benching method

  গ

  Drift method

  ঘ

  All the above
• Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?
  ক

  It is suitable for construction in unstable rocks

  খ

  In this method, it is easy to install timber support

  গ

  Tunneling can be continuous and the work can be expedited

  ঘ

  In case of excessive water, it is easy to take correct steps
• For transferring the tunnel alignment through shafts, we adopt the following steps: <br>1.Hanging two or more plumb lines in the shaft<br>2.Determining the bearing of the plumb lines i.e. plumb plane<br>3.Suspending a 35 kg weight by each plumb line<br>4.Immersing the weights of both the plumb lines in the buckets containing water<br>The correct sequence of steps is:
  ক

  1, 2, 3, 4

  খ

  4, 3, 2, 1

  গ

  1, 3, 2, 4

  ঘ

  2, 1, 4, 3
• For B.G. single track, the section of the tunnel must have a width
  ক

  4.2 m to 4.5 m

  খ

  4.5 m to 4.8 m

  গ

  4.9 m to 5.5 m

  ঘ

  5.5 m to 5.8 m
• For hauling muck from the tunnel, the following type of muck-car is used:
  ক

  Muck box

  খ

  Side dump car

  গ

  U-bottom

  ঘ

  All of these
• The difference of heights of the tunnels above rail tops of BG and MG tracks is kept
  ক

  0.30 m

  খ

  0.45 m

  গ

  0.60 m

  ঘ

  0.75 m
• The correct sequence of drilling equipment for increasing size of holes in tunnels is
  ক

  Wagon drill, churn drill, shot drill

  খ

  Wagon drill, shot drill, churn drill

  গ

  Shot drill, churn drill, wagon drill

  ঘ

  Churn drill, wagon drill, shot drill