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GATE preparation for Civil Engineering

(159 Posts)

This thread is dedicated to preparation for Civil Engineering - CE section of GATE. You may share questions related to topics like Steel Structures, Concrete Structures, Soil Mechanics, Surveying, Highway Engineering, Structural Analysis, Environmental Engineering, Irrigation, Structural Engineering, Fluid Mechanics and Hydraulics etc.

Question should not exceed 100 characters.Use add options for multiple choice questions and "Uploadimage/Add related data" for passage text papers.
Question should be at least 10 characters long.
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Ashish
Shared from Fluid Mechanics and Hydraulics - 1 on Oct 05, 2020 11:10 AM

The velocity in m/s at a point in a two-dimensional flow is given as = 2y+ 3x. The equation of the streamline passing through the point is

 
xy = 6
2x + 3y = 0
3dx + 2dy = 0
3dx - 2dy = 0
Please type your answer before submitting.

The streamline equation is: vdx-udy=0 as per this equation no option matched. KINDLY RECHECK.

Ashish Kumar Gupta
Shared from Fluid Mechanics and Hydraulics - 5 on May 18, 2020 6:42 PM

A stream function is given by:

= 2x2y + (x + 1)y2

The flow rate across a line joining points A(3, 0) and B(0, 2) is

 
0.4 unit
1.1 unit
4 units
5 units
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Please provide solution

Ashish Kumar Gupta
Shared from Fluid Mechanics and Hydraulics - 5 on May 18, 2020 5:36 PM

A hydraulic jump occurs in a rectangular, horizontal, frictionless channel. What would be the pre - jump depth, if the discharge per unit width is 2 m3/s per metre and the energy loss is 1 m?

 
0.2 m
0.3 m
0.8 m
0.9 m
Please type your answer before submitting.

Please explain trialand error

Ashish Kumar Gupta
Shared from Fluid Mechanics and Hydraulics - 5 on May 17, 2020 5:35 PM

In the Jet air testing facility in Baroda, consider a streamline. At a particular point on the streamline, the velocity is 300 cm/s the radius of the curvature is 900 cm. Estimate the rate of increase of velocity along the streamline at this point.

 
1 m/s2
3 m/s2
√3 m/s2
√2 m/s2
Please type your answer before submitting.

What are as and an ?

Ashish Kumar Gupta
Shared from Fluid Mechanics and Hydraulics - 5 on May 17, 2020 5:32 PM

A rectangular open channel needs to be designed to carry a flow of 2.0 m3/s under uniform flow conditions. The Manning`s roughness coefficient is 0.018. The channel should be such that the flow depth is equal to half the width and the Froude number is equal to 0.5.

Keeping the width, flow depth and roughness the same, if the bed slope of the above channel is doubled, the average boundary shear stress under uniform flow conditions is

 
5.6 N/m2
10.8 N/m2
12.3 N/m2
17.2 N/m2
Please type your answer before submitting.

Please explain the value of S and y