Bypass valve in a compressed oxygen type self-contained breathing apparatus is meant to
A. Release accumulated nitrogen in the breathing bag
B. Release excess pressure in the breathing bag
C. Supply oxygen directly to wearer in case pressure reducing valve does not function
D. Flush out the apparatus with oxygen on opening the cylinder valve
Answer: Option C
Related Questions on Mine Ventilation
The mechanical mixture of gases existing in a mine given off after explosion called
A. White damp
B. Stink damp
C. Black damp
D. After damp
A Drager Gas Mask does not filter
A. Water vapour
B. Nitrous fumes
C. Carbon monoxide
D. Carbon dioxide
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