Which of the following is not a component of the shield ?

Related Mcqs:

1. Which one of the following is a component of a shield for tunnelling ?

   A. liner plate
   B. trench jack
   C. stiffener
   D. cutting edge

2. Which of the following lining material is useful for shield driven tunnels in sub aqueous regions ?

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

3. Which one of the following tunnelling methods is used for laying under ground sewers ?

   A. Needle beam method
   B. Army method
   C. German method
   D. Italian method

4. Which of the following methods of tunneling is used for long tunnels at great depths ?

   A. Army method
   B. Needle beam method
   C. Austrian method
   D. English method

5. 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 using the codes given below
   Codes ?

   A. 1,6,5,3,4,2,7
   B. 1,2,6,3,5,4,7
   C. 1, 6,2, 5,4, 3, 7
   D. 1,6,2,5,3,4,7

6. Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?

   A. It is suitable for construction in unstable rocks
   B. In this method, it is easy to install timber support
   C. Tunnelling can be continuous and the work can be expedited
   D. In case of excessive water, it is easy to take correct steps

7. 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 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

8. Which of the following are percussion drills ?

   (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

9. A good blast with a good yield is obtained if the cut hole is___________________?

   A. normal to face
   B. inclined at 45° to the face
   C. inclined at 15° to the face
   D. inclined at 30° to the face

10. The most suitable soil for compressed air tunneling is________________?

    A. silt
    B. sand
    C. clay
    D. gravel