Coal Mining - Study Mode
[#81] The discharge of sand given by the formulae Q s =
Correct Answer
(A) $$frac{{{{ ext{Q}}_{ ext{m}}} imes { ext{S}}}}{{{ ext{S}} + { ext{W}}}}$$
[#82] In mechanical stowing, the material has to be deflected on the thrower belt by deflection plates called as . . . . . . . . which drops material into . . . . . . . .
Correct Answer
(A) Scraper ploughs, hopper
[#83] The method of sinking through alternate loose and hard strata upto 60 m
Correct Answer
(C) Forced drop
[#84] Nomographs are used for in under ground mining.
Correct Answer
(A) Design of pillars
[#85] The charge per hole in BG method.
Correct Answer
(C) 3 kg