Q181
Open questionThe length of glass tube in Fortin barometer . . . . . . . . and the inside diameter . . . . . . . .
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Mining Engineering · all questionsMine Ventilation
Mine Ventilation
practice.
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440
Questions
10/22
Page
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Q182
Open questionThe principle behind the flame safety lamp and spiral alarm detectors . . . . . . . .
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Q183
Open questionThe effect of breathing air containing CO in air is about 0.12 . . . . . . . .
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Q184
Open questionThe barometric pressure which increases with . . . . . . . . and decreases with . . . . . . . .
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Q185
Open questionThe permissible limit of H2S is
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Q186
Open questionThe Argon gas behaves like a
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Q187
Open questionMesh size of flame safety lamp is
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Q188
Open questionDay plants absorb . . . . . . . . from air by photosynthesis process.
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Q189
Open questionFind the velocity of air m/sec. the w.g is 25 mm and density of air 1 kg/m3.
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Q190
Open questionDry kata for light manual workers is
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Q191
Open questionAt what % H2 by volume of air, the lag of ignition of methane is completely eliminated
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Q192
Open questionIt has been found that fire damp can came from strata overlying the seam being mined upto distance.
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Q193
Open questionIn III degree gassy mines, the minimum qualification of a shot fires should be . . . . . . . . with gas testing.
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Q194
Open questionThe delay between ignition and source of heat is known as
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Q195
Open questionIf one kg of methane in burning evolves . . . . . . . . KCal of heat.
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Q196
Open questionCritical temperature of CO
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Q197
Open questionThe detection of CO by a flame safety lamp.
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Q198
Open questionThe centrifugal fan types are . . . . . . . .
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Q199
Open questionThe equation for Charle's Law
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Q200
Open questionCritical pressure of nitrogen is
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