Q301
Open questionThe density of air DC shaft 1.2 and the height of motive column is 12 m what is the NVP in kg/m2.
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Mining Engineering · all questionsMine Ventilation
Mine Ventilation
practice.
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440
Questions
16/22
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Q302
Open questionEMCOR CO detection and monitoring system weight in . . . . . . . . kg.
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Q303
Open questionThe mixture of gases emanting from the strata of the coal mine contains ethane etc.
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Q304
Open question. . . . . . . . sign is to be used when pressure gauge records vaccum.
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Q305
Open questionThe frame along with thermometer is whirled at . . . . . . . . rpm.
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Q306
Open questionThe cooling power calculated is called wet if there is
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Q307
Open questionMost commonly used dust in mins through at the world for stone dusting is of
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Q308
Open questionThe quantity of air in ventilating district the minimum should be . . . . . . . . m3 per person employed in largest shift and more than . . . . . . . . m3/min per daily ton out put.
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Q309
Open questionOxygen deficiency monitor made in Lucknow in
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Q310
Open questionOXD-2M instrument alarm is adjustable from . . . . . . . . of O2 content.
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Q311
Open questionThe CH4 emission from a prospective coal mine can be forcasted using
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Q312
Open questionThe distance required for complete mixing of methane in air by turbulent diffusion in a duct is given by the following equation +2% accuracy is
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Q313
Open questionThe percentage of O2 present in atmosphere by weight
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Q314
Open questionThe pressure developed by a mine fan is small and is measured by a manometer, the fluid used is . . . . . . . .
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Q315
Open questionWhat should be the speed of air current when the wet bulb temperature exceeds 30.5°C
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Q316
Open questionIf CO2 replaces air by . . . . . . . .% loss of consciousness causes to person.
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Q317
Open questionIf the wet bulb temperature exceeds 30.5% at any place air current should be faster than . . . . . . . .
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Q318
Open questionAcetylene lamp, burns when the oxygen percentage as low as . . . . . . . .
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Q319
Open questionAir flow from high pressure range to low pressure range. The difference of pressure caused by purely natural means called . . . . . . . .
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Q320
Open questionThe generation of heat on the oxydation of CO to CO2 has utilised by the detector . . . . . . . .
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