Related Questions

Which one of the following statements is not correct for heading and benching method of tunnelling?
A Drilling and mucking can be done simultaneously
B Benching provides a platform for working on heading
C Removal of muck from the heading is very easy
D None of these
একটি ট্রেনের স্থির অবস্থায় দৈর্ঘ্য হলো 100 m। এটি অতি উচ্চ বেগে 80m দৈর্ঘ্যের একটি সুড়ঙ্গের মধ্য দিয়ে যায়। সুড়ঙ্গের দুই প্রান্তে অবস্থিত পর্যবেক্ষকরা লক্ষ করেন যে, একটি মুহূর্তে ট্রেনটির দৈর্ঘ্য ঠিক সুড়ঙ্গের দৈর্ঘ্যের সমান হয়। c এর এককে ট্রেন এর বেগ কত? (A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 80 m. Observers located at both ends of the tunnel note that at one instant the train appears to exactly fit within the tunnel. What is the velocity of the train expressed in units of c?)
A 0.866 c
B 0.333 c
C 0.5 c
D 0.6 c
ধর, পৃথিবীর ব্যাস বরাবর একটি সুড়ঙ্গ খনন করা হলো এবং পৃথিবীর পৃষ্ঠ থেকে একটি ক্ষুদ্র বস্তুকে সুড়ঙ্গের মধ্যে ছেড়ে দেওয়া হলো বস্তুটি যখন পৃথিবীর কেন্দ্রে পৌঁছাবে তখন মুক্তিবেগ Ve এর সাপেক্ষে বস্তুটির বেগ কত হবে? (imagine that a tunnel is dug along a diameter of the Earth and a small body is dropped into the tunnel from the surface. What will be its speed in terms of the escape speed Ve when it reaches the centre of the Earth?)
A 32Ve
B 12Ve
C 12Ve
D 0
Seikan Tunnel which is a Railway tunnel with less than half length under seabed is located in which country?
A Japan
B South Korea
C North Korea
D China
India's longest tunnel Jawahar tunnel is located in which state?
A Jammu and Kashmir
B Maharashtra
C Karnataka
D Himachal Pradesh
channel Tunnel is an under sea rait tunnel linking.
A England & Ireland
B England & Rfance
C France & Germany
D None of these.
A train 800 meters long is running at a speed of 78 km/hr . If it crosses a tunnel in 1 minute, then the length of the tunnel ( in meters ) is :
A 360
B 500
C 540
D 130
Which one of the following statements is not correct with regard to heading and henching method of tunnelling?
A Driving of tunnel is done in two portions of its section
B Driving the top portion is done in advance of the bottom portion
C The holes in head and bench are loaded together with explosive for blasting
D Firing of head holes is done just before the bench holes are fired
Raj starts from his home and walks 5 miles towards east, then turns left and walks 3 miles, and then again turns left and walks 2 miles. Raj is now heading towards ---
A East
B South
C West
D North
Which of the following element represents the header of a section or the document and contains a label or other heading information for the related content?
A data-X
B header
C mark
D meter

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