Drilling And Blasting - Study Mode
[#856] The overall efficiency (or) useful effect . . . . . . . .
Correct Answer
(A) $$frac{{{ ext{HP of ventilation}}}}{{{ ext{HP input to engine}}}}$$
[#857] The ignition temperature of betuminous coal is nearly . . . . . . . .°C.
Correct Answer
(D) 200
[#858] The maximum number of shots that a shotfirer may fire in any shift by using a multi-shot exploder
Correct Answer
(C) 80
[#859] The coefficient of friction in unlined roadway . . . . . . . .
Correct Answer
(B) 0.01118
[#860] In which regulation of CMR 2017, the provisions of dealing with misfires are given?
Correct Answer
(C) 204