A. Ratio of quantity of air reading last connection and quantity of air forced down by fan
B. Ratio to velocity to quantity
C. Ratio to speed to pressure
D. The ratio of quantity of air reaching the last ventilation connection and quantity of air entering the district
Answer: Option D
This Question Belongs to Mining Engineering >> Drilling And Blasting
Which of the following prime characteristic the nonel blasting has?
A. It has greater shock to the surrounding
B. It is noiseless in character
C. It has tremendous effect on explosive column
D. It can not be used in a place where there is a chance of stray current
A. Fire, Explosion
B. Gas, Outburt
C. Rockburst, bump
D. None
Cyclone, bag filter and scrubber can be used for control.
A. Water pollution
B. Soil pollution
C. Air pollution
D. Noise pollution
A two phase system in which an inner or dispersed phase is distributed in an outer called
A. Emulsion
B. Slurry
C. Explosion
D. Erosion
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