Hydraulics And Fluid Mechanics - Study Mode
[#166] The resultant upward pressure of the fluid on an immersed body is called
Correct Answer
(B) buoyancy
[#167] Which of the following meters is not associated with viscosity
Correct Answer
(D) Orsat
Explanation
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.
[#168] Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by
Correct Answer
(A) 5%
[#169] The process of diffusion of one liquid into the other through a semi-permeable membrane is called
Correct Answer
(B) osmosis
[#170] 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)
Correct Answer
(B) 0.20 cm