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Home⇒ Engineering⇒
Tunnel engineering
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ Circular section of tunnels is not suitable for placement of concrete lining [other wrong options] [Discuss in forum] ![]() ![]() carrying water non-cohesive soils tunnels driven by shield method |
Q2 ⇒ A good blast with a good yield is obtained if the cut hole is inclined at 45° to the face [other wrong options] [Discuss in forum] ![]() ![]() normal to face inclined at 15° to the face inclined at 30° to the face |
Q3 ⇒ As compared to a single free face, if a charge of explosive is placed equidistant from two faces, then the yield increases by 2.25 times [other wrong options] [Discuss in forum] ![]() ![]() remains same decreases increases by 3.5 times |
Q4 ⇒ Drifters can be used to drill horizontal, down or up holes [other wrong options] [Discuss in forum] ![]() ![]() only up holes only down holes horizontal or up holes |
Q5 ⇒ If 'N' is the number of shafts used, then the total number of feces available for attacking the excavation and construction in tunnels are 2 N + 2 [other wrong options] [Discuss in forum] ![]() ![]() 2N N + 2 2 N + 1 |
Q6 ⇒ The correct sequence of drilling equipment for increasing size of holes in tunnels is wagon drill, churn drill, shot drill [other wrong options] [Discuss in forum] ![]() ![]() wagon drill, shot drill, churn drill shot drill, churn drill, wagon drill churn drill, wagon drill, shot drill |
Q7 ⇒ Which of the following is not a component of the shield ? liner plate [other wrong options] [Discuss in forum] ![]() ![]() propelling jacks hood tail |
Q8 ⇒ In compressed air tunneling, the volume of free air provided is 6 m3 per minute per m2 of face area [other wrong options] [Discuss in forum] ![]() ![]() 6 mJ per second per m2 of face area 20 m3 per minute per m2 of face area 6 m3 per hour per m2 of face area |
Q9 ⇒ Which of the following lining material is useful for shield driven tunnels in sub aqueous regions ? cast iron [other wrong options] [Discuss in forum] ![]() ![]() stone masonry timber cement concrete |
Q10 ⇒ If 'D' is the diameter of tunnel in metres, then the thickness of lining in mm, as per the empirical formula is given by 82 D [other wrong options] [Discuss in forum] ![]() ![]() 42 D 104 D 124 D |
Q11 ⇒ Which one of the following tunneling methods is used for laying under ground sewers ? Army method [other wrong options] [Discuss in forum] ![]() ![]() Needle beam method German method Italian method |
Q12 ⇒ Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than 3 m [other wrong options] [Discuss in forum] ![]() ![]() 2 m 4 m 5 m |
Q13 ⇒ The most suitable soil for compressed air tunneling is clay [other wrong options] [Discuss in forum] ![]() ![]() silt sand gravel |
Q14 ⇒ Which of the following methods of tunneling is used for long tunnels at great depths ? Austrian method [other wrong options] [Discuss in forum] ![]() ![]() Army method Needle beam method English method |
Q15 ⇒ In Belgium method of tunnelling construction of roof arch is completed before side walls and invert are built. [other wrong options] [Discuss in forum] ![]() ![]() construction of side walls is completed before invert and roof arch are built. construction of invert is completed before side walls and roof arch are built. construction of invert and side walls is completed before roof arch is built. |
Q16 ⇒ Drift method of tunnelling is used to construct tunnels in rock [other wrong options] [Discuss in forum] ![]() ![]() soft grounds self supporting grounds broken grounds |
Q17 ⇒ Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction? Tunnelling can be continuous and the work can be expedited. [other wrong options] [Discuss in forum] ![]() ![]() It is suitable for construction in unstable rocks. In this method, it is easy to install timber support. In case of excessive water, it is easy to take correct steps. |
Q18 ⇒ In "full face" method of constructing tunnels, the first operation relates to excavation being done along the periphery [other wrong options] [Discuss in forum] ![]() ![]() removal of bottom portion excavation of one drift in the center removal of top portion |
Q19 ⇒ Which one of the following is a component of a shield for tunneling ? cutting edge [other wrong options] [Discuss in forum] ![]() ![]() liner plate trench jack stiffener |