Q121
Open questionThe dust sampling methods are . . . . . . . .
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Mining Engineering · all questionsMiscellaneous in Mining
Miscellaneous in Mining
practice.
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184
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Q122
Open questionMucus in the throat and respiratory passages catches the dust size particles of coarser size . . . . . . . . and above diameter.
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Q123
Open questionThe range of coal dust particles producing most violent explosion is . . . . . . . .
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Q124
Open questionThe area of the regulator required for flow of a certain quantity of air can be circulated from the formule.
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Q125
Open questionDust incharge can work as sampling incharge in a mine when the average monthly output is . . . . . . . .
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Q126
Open questionIf the battery voltage is below . . . . . . . . in flame safety lamp of GL-60 should be discarded.
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Q127
Open questionThe formulae for illumination of surface = . . . . . . . .
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Q128
Open questionWhich flame safety lamp is more sophisticated.
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Q129
Open questionThe end of charge is marked (in lead acid battery) in the libaration of O2 and H2 from the electrolite a condition known as
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Q130
Open questionInhalation of hydrated magnesium silicate causes the disease.
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Q131
Open questionFamilier lighting tube is discharge lamp called . . . . . . . . discharge tube.
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Q132
Open questionFire brigades should carry out fire fighting practices at least in energy.
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Q133
Open questionModern safety lamps can with stand an air velocity of . . . . . . . .
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Q134
Open questionSilica is crucial component in determining dust hezard because it is . . . . . . . .
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Q135
Open questionCalculate the w.g of a fan has to develop for ventilation tunnel under following conditions. The surface area is 2160 m3; Area = 7.2 m2. Coeff. of resistance 0.00161 mm of wg/m3. Quantity of air passing is 6 m3/sec.
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Q136
Open questionHow many number of steel rods protected at the outer glass of oil flame safety lamp.
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Q137
Open questionThe battery can relight the lamp . . . . . . . . times in the hot lamp by use of graded filament.
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Q138
Open questionThe lamp which provided relighting arrangement.
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Q139
Open questionThe thickness of the permanent water dam is . . . . . . . .
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Q140
Open questionIn depillaring areas the flood lighting in deg.I gassy mines . . . . . . . . m at floor level.
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