Drilling And Blasting - Study Mode
[#311] The General arrangement is to sink two shafts close to each other separated by . . . . . . . ., for facility of a quicker inter communication.
Correct Answer
(A) 30 to 60 m
[#312] To get lump coal or to minimize the coal dust the blasting technique adopted is
Correct Answer
(C) Cushion blasting
[#313] A person doing heavy work breaths at a rate of nearly . . . . . . . . Breaths.
Correct Answer
(C) 20
[#314] The newest unit of Coal India Limited is . . . . . . . .
Correct Answer
(D) MCL
[#315] The head characteristic of the forward blade centrifugal fan at first with increasing capacity until it flattens, then raising trend before starting to fall again. This indicates the lower loss of head at low capacity which is mainly due to
Correct Answer
(B) Large number of blade which help recirculation of air