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Hydraulics And Fluid Mechanics MCQ Questions & Answers | Civil Engineering

Learn Hydraulics And Fluid Mechanics MCQ questions & answers are available for a Civil Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Hydraulics And Fluid Mechanics MCQ question is the important chapter for a Civil Engineering and GATE students. Page-1 section-2

Each section contains 100 MCQs on Hydraulics and Fluid Mechanics .
1
The resultant upward pressure of the fluid on an immersed body is called
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Answer & Solution
Answer: Option B
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2
Which of the following meters is not associated with viscosity
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Answer & Solution
Answer: Option D
Solution:
In the context of fluid mechanics and viscosity measurement, the Orsat meter is not associated with viscosity. The Orsat meter is primarily used for the analysis of gas composition, particularly for measuring the percentage of carbon dioxide, oxygen, and other gases in a gas sample.

On the other hand:
Option A: Redwood viscometer is associated with measuring viscosity.
Option B: Saybolt viscometer is used for measuring the viscosity of petroleum products.
Option C: Engler viscometer is another instrument used for measuring viscosity.

Therefore, the correct answer is Option D: Orsat, as it is not related to viscosity measurement.
3
Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by
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Answer & Solution
Answer: Option A
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4
The process of diffusion of one liquid into the other through a semi-permeable membrane is called
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Answer & Solution
Answer: Option B
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5
The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is (Assume that boundary layer is entirely laminar)
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Answer: Option B
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6
If a vessel containing liquid moves downward with a constant acceleration equal to ‘g’ then
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Answer & Solution
Answer: Option A
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7
In an immersed body, center of pressure is
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Answer & Solution
Answer: Option C
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8
In an isothermal atmosphere, the pressure
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Answer: Option C
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9
Rain drops are spherical because of
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Answer & Solution
Answer: Option C
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10
To avoid an interruption in the flow of a syphon, an air vessel is provided
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Answer & Solution
Answer: Option C
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