Download Aptitude Crack
img not found img not found

Tunnelling

Q1:

Which one of the following statements is not correct with regard to heading and hench-ing 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 After driving the top portion 3 m to 3.5 m holes are drilled into the head and bench.

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

E Firing of head holes is done just before the bench holes are fired.

ANS:E - Firing of head holes is done just before the bench holes are fired.

No answer description is available. 



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.