Assertion A : English method of tunneling requires more time as compared to other methods of tunneling. Reason R : In English method of tunneling, the masons and excavators have to work alternately/

Related Mcqs:

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...

Drifters can be used to drill_________________?

A. only up holes B. only down holes C. horizontal or up holes D. horizor„al, down or up holes...

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

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

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...

Drift method of tunnelling is used to construct tunnels in__________________?

A. soft grounds B. rock C. self supporting grounds D. broken grounds...