A fan ventilating a heading through a duct of 750mm diameter circulates 5m3s-1 of air at the face. Calculate the heat added to the air by the fan, if the input power of the fan is equal to 3kW.
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Mining Engineering · all questionsMine Environment
Mine Environment
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Find the percentage of blackdamp from the mine air sample (pressure by volume) shown below: O2 = 19.11; N2 = 79.04; CO2 = 0.25; CO =
0.02; CH4 =1.58
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The method factor for anemometer reading in duct varies with the
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What is the acoustical power of a 100 hp air compressor whose rated sound power level is 130 dB
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What do you mean by head co-efficient?
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Electrostatic precipitator works on the principle of
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Noise in fans is a function of A. Where A is given by
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As per Indian law the methane concentration should not exceed "A%" in any part of the mine. A is given by
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What are the composition of the solution in which the plates of the Oldham cap lamp battery remain immersed?
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In ambient air of an School locality, the permissible concentration of PM10 measured on 24 hours average in μg/m3 is
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This is a British instrument that works on tyndall effect and comprises of a collimated beam of near-infra red light passing through a dust chamber. Identify the instrument
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