Environmental Engineering in CE Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan Both A & B Of increased diameter Neither A nor B With greater number of blades Both A & B Of increased diameter Neither A nor B With greater number of blades ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foul odour and bad taste of water is removed by treating with Activated carbon Alum Bleaching powder Copper sulphate Activated carbon Alum Bleaching powder Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas? Hydrogen Ammonia Acetylene Carbon monoxide Hydrogen Ammonia Acetylene Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Reingleman chart No. 2 corresponds to __________ percent black smoke. 40 80 20 10 40 80 20 10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level during normal conversation among men is about __________ decibles. 10 115 90 45 10 115 90 45 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is an adsorbant used for the removal of SO₂ from gas/air? Active carbon Bog iron Silica gel Limestone powder or alkalised alumina Active carbon Bog iron Silica gel Limestone powder or alkalised alumina ANSWER DOWNLOAD EXAMIANS APP
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