Q281
Open questionThe important factors affecting gas emission are
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Mining Engineering · all questionsMine Ventilation
Mine Ventilation
practice.
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440
Questions
15/22
Page
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Q282
Open questionThe density of a gas inversely proportional to the absolute temperature when pressure is constant
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Q283
Open questionMaximum permissable quantity of CO2 in mine air is
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Q284
Open questionCritical temperature of CO2
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Q285
Open questionRakin interferometer manufactured in
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Q286
Open questionDry kata for hard manual workers is
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Q287
Open questionIn cat II and III degree gassy mine, major consideration to decide the quantity of air going u/g is the rate of emission of gas, should be diluted by ventilating air, that is percentage not more than . . . . . . . . in the main return air way of mine.
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Q288
Open questionA person at walking at 3 km/hour consumes nearly . . . . . . . .
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Q289
Open questionCritical temperature of nitrogen . . . . . . . .
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Q290
Open questionThis is the pressure exerted by a moving fluid on the surface parallel with the direction of movement called . . . . . . . .
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Q291
Open questionThe instrument factor of kata thermometer.
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Q292
Open questionCritical temperature of CH4.
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Q293
Open questionThe cause which tend to heat the air in mine . . . . . . . .
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Q294
Open questionH2 found in u/g . . . . . . . . places.
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Q295
Open questionReduction of each 1% of oxygen percentage light of flame safety lamp diminishes by . . . . . . . .
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Q296
Open questionThe length of connecting cable of temperature humidity monitor is . . . . . . . . long.
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Q297
Open questionThe gas abundant in atmosphere comprising about of atmosphere called
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Q298
Open questionIn gassy coal mines Deg. II & III, the quantity of air should be more than the minimum stated above and a reasonable figure should be . . . . . . . . m3/min per person employed.
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Q299
Open questionThe flame safety lamp extinguished if the oxygen percentage falls to about . . . . . . . .
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Q300
Open questionThe standard atmospheric pressure also called as
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