Q401
Open questionCooling power calculated is called dry, if there is . . . . . . . .
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Mining Engineering · all questionsMine Ventilation
Mine Ventilation
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Q402
Open questionIf hydrometer readings taken regularly to provide an indication weather or not . . . . . . . . taking place.
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Q403
Open questionThe upper limit of inflammability of methane air mixture.
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Q404
Open questionSynonymous of carbon monoxide reffered as
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Q405
Open questionThe gas which imitates eyes and respiratory passages.
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Q406
Open questionThe atmospheric pressure measured by an instrument . . . . . . . .
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Q407
Open questionTo make it an explosive, in which range of methane air mixture falls.
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Q408
Open questionWhat happens in a mine, there is a sudden drop in barrowmetric pressure . . . . . . . .
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Q409
Open questionThe gas easily disolved by moisture in mine air
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Q410
Open questionThe temperature and humidity monitor is
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Q411
Open questionD.C shaft is used for sending . . . . . . . . air.
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Q412
Open questionThe fluid commonly used in 'U' tube manometer of pressure difference is small.
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Q413
Open questionThe percentage of CO2 present in atomospheric air by weight
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Q414
Open questionA portable optical methanometer has been designed and developed jointly by
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Q415
Open questionFans classified in to . . . . . . . . types.
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Q416
Open questionCanaries or small birds can survive if O2 percentage is as low as . . . . . . . .
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Q417
Open questionIn rainy season maximum humidity in sea shore areas like Calcutta will be about
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Q418
Open questionMine air should contain minimum . . . . . . . .% O2.
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Q419
Open questionThe following equation explain the explosibility of mixture of combustable gasses
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Q420
Open questionBlack damp composition is
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