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Mining Engineering · Q84

Mine Ventilation

Engineering and GATE · Mining Engineering · question 84

Q84

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
Answer
D.
Flush out the apparatus with oxygen on opening the cylinder valve

Answer: Option C

Solution

Answer: Option C
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