A 15 ml sample of treated waste water requires 285 ml of odour free distilled water to reduce the odour to a level that is just perceptible.The threshold odour number for the wastewater sample will be ________.
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Solution
A river having a tortuosity of 1.3, can be said to have
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Solution
Meander Ratio : Ratio of meander width to meander length.
Tortuosity :Ratio of length along the channel (i.e. actual length) to the direct axial length of river reach.
The velocity potential fat any point for a two dimensional,steady, irrotational flow in polar co-ordinates is given by \(\phi =\frac{\lambda \: cos\: \theta }{r}\) This equation represents.
Consider the following characteristics of soil layer
1.Poisson’s ratio
2.Young’s modulus 3.Finite nature of soil layer
4.Effect of water table
5.Rigidity of footing
Westergaard’s analysis for pressure distribution in soil utilises.
Which of the following is NOT a preservative of timber
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Solution
Solignum point, chemical salts (like ZnCl2 sodium silicate) creosote oil are used as preservatives to timber.Hence, by elimination method, solution of Barium hydroxide is NOT a timber preservative.
Which of the following is a scalar quantity?
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Solution
Moment of force about an axis, will not have any direction. Hence, it can be considered as scalar quantity.So, option (b).
The amount of surcharge to be added so that net active thrust at the surface at clay soil becomes zero is
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Solution
Match list I with list II and select the correct answer using the codes given below the lists.
List I List II
A.Evapo-transpiration 1.Penman method
B.Infilteration 2.Synder’s method
C.Synthetic unit 3.Muskingum method hydrograph
D.Channel routing 4.Horton’s method
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Solution
Penman equation for evapo-transpiration.
Horton's Infilteration curve
's'for synthetic unit hydrograph, 's'for synders.
Channel routing by Muskingum method.
Find the magnitude of froude’s number after the hydraulic jump given that froude no. before the jump is 10 is _____.
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Solution
A spherical droplet of radius 8mm is split into 8 smaller droplets of equal size. If sis the surface tension then work required will be
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