Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using Lagging of noisy duct Accoustical absorbent None of these Mufflers (silencers) Lagging of noisy duct Accoustical absorbent None of these Mufflers (silencers) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid ilow control. It is caused due to Both A & B Shear forces Neither A nor B Reynold stresses Both A & B Shear forces Neither A nor B Reynold stresses ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Infective bacteria in water is killed by the __________ process. Sterilisation Disinfection None of these Aeration Sterilisation Disinfection None of these Aeration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure Both (i) and (ii) All (i), (ii) and (iii) Both (i) and (iii) Only (i) Both (i) and (ii) All (i), (ii) and (iii) Both (i) and (iii) Only (i) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km. 1 6.5 15 0.05 1 6.5 15 0.05 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) of CO in air is __________ ppm. 5 5000 50 2000 5 5000 50 2000 ANSWER DOWNLOAD EXAMIANS APP
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