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Mining Engineering · Q122

Mine Ventilation

Engineering and GATE · Mining Engineering · question 122

Q122

Life of OXD-2M O2 meter works for a . . . . . . . . Period continuously, when fully charged.

A.
20 hours
B.
27 hours
Answer
C.
30 hours
D.
48 hours

Answer: Option B

Solution

Answer: Option B
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