Waste Water Engineering Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter Less than 0.05 mm Less than 0.01 mm Less than 0.1 mm Greater than 0.1 mm Less than 0.05 mm Less than 0.01 mm Less than 0.1 mm Greater than 0.1 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is Vs = 418 (Gs – Gw) d [(3T + 70)/100] Vs = 418 (Gs – Gw)d² [(3T + 70)/100] Vs = 218 (Gs – Gw)d² [(3T + 70)/100] Vs = 218 (Gs – Gw)d [(3T + 70)/100] Vs = 418 (Gs – Gw) d [(3T + 70)/100] Vs = 418 (Gs – Gw)d² [(3T + 70)/100] Vs = 218 (Gs – Gw)d² [(3T + 70)/100] Vs = 218 (Gs – Gw)d [(3T + 70)/100] ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The screens are fixed Perpendicular to the direction of flow None of these At an angle 30° to 60° to the direction of flow Parallel to the direction of flow Perpendicular to the direction of flow None of these At an angle 30° to 60° to the direction of flow Parallel to the direction of flow ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The pH value of fresh sewage is usually Equal to 7 More than 7 Equal to zero Less than 7 Equal to 7 More than 7 Equal to zero Less than 7 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Drop manholes at the junctions of sewer lines, are provided if Two sewer lines intersect Sewer line runs along a main road Invert level of a branch sewer is more than 60 cm that of the main sewer Ordinary manhole cannot be built Two sewer lines intersect Sewer line runs along a main road Invert level of a branch sewer is more than 60 cm that of the main sewer Ordinary manhole cannot be built ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewage, the solids in mg per litre is 1500 to 2000 1000 to 1500 500 to 1000 100 to 500 1500 to 2000 1000 to 1500 500 to 1000 100 to 500 ANSWER DOWNLOAD EXAMIANS APP
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