Mine Ventilation - Study Mode
[#266] The percentage of argon present in atmospheric air by volume.
Correct Answer
(C) 0.94
[#267] Every fan on surface should be capable of . . . . . . . . the ventilation, if electrically driven.
Correct Answer
(C) reversal
[#268] Infrared spectrometry commonly used for
Correct Answer
(B) gas analysis
[#269] H 2 is . . . . . . . . gas.
Correct Answer
(C) light
[#270] The formulate for finding the vertical water gauge by inclined manometer is
Correct Answer
(A) L × sin ∝ × W