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Waste Water Engineering

Waste Water Engineering
Which one of the following part of human body withstands minimum radiation?

Eyes
Kidneys
Thyroid
Ovaries/testis

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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 0.1 mm
Greater than 0.1 mm
Less than 0.01 mm
Less than 0.05 mm

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Waste Water Engineering
15 cumecs, the depth d and width are related by For drains up to

d = 0.5 B
B = 0.5 d
B = 0.2 d
d = 0.2 B

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Waste Water Engineering
The non-clog pump which permits solid matter to pass out with the liquid sewage, is

Pneumatic ejector
None of these
Reciprocating pump
Centrifugal pump

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Waste Water Engineering
A sewer running partially full and hurried with back filled, fails in compression due to

Superimposed traffic loads
All listed here
Weight of the pipe
Weight of the back fill

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Waste Water Engineering
For providing an Indian type W.C., the R.C.C. slabs in the toilet portion

Should be sunk by 20 cm
Need not be sunk
Should be kept 20 cm above the adjacent portion
Should be sunk by 50 cm

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