Drilling And Blasting - Study Mode
[#121] Which of the following detonators are used with P5 explosives (off-the-solid-blasting)?
Correct Answer
(C) carrick short delay non-incendive detonators
[#122] By varying pitch of blades, the quantity of air circulated can be varied, but the pressure produced is . . . . . . . .
Correct Answer
(A) Same
[#123] The diameter of M.S pipe with plug for recording temperature of the atmosphere below stopping.
Correct Answer
(D) 50 mm
[#124] In this type of fan consists of two impellers rotating in opposite direction.
Correct Answer
(A) Contra rotating
[#125] The minimum thickness of isolation stopping in I and II degree gassy mine.
Correct Answer
(A) 1 m