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ESE ME 2018 Achiever Study Plan: Fluid Mechanics Quiz 2
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Question 1
Direction: Each of the question consist of two statements, one labeled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answer to these items using the codes given below:
Statement (I): In flow through a pipeline, the nature of the fluid flow depends on the velocity of the fluid.
Statement (II): Reynolds number of the depends on the velocity, the diameter of the pipe and the kinematic viscosity of the fluid.
Statement (II): Reynolds number of the depends on the velocity, the diameter of the pipe and the kinematic viscosity of the fluid.
Question 2
How is the metacentric height, GM expressed?
Question 3
For irrotational and incompressible flow, the velocity potential and stream function are given by ϕ and Ψ respectively. which one of the following sets is correct?
Question 4
A right circular cylinder, open at the top, is filled with a liquid of specific gravity 1.2, and rotated about its vertical axis at such a speed that half of the liquid spills out. The pressure at the centre of the bottom is
Question 5
For a steady two-dimensional flow, the scalar components of the velocity field are Vx = –2x; Vy = 2y and Vz = 0. The corresponding components of acceleration ax and ay, respectively are:
Question 6
Two flows are specified as
A.
B.
Which one of the following can be concluded?
A.
B.
Which one of the following can be concluded?
Question 7
The distance from the centre of buoyancy to the metacentre is given by I/Vd where Vd is the volume of fluid displaced. What does I represent _________?
Question 8
Consider the following statements :
1) The phenomenon of lift produced by imposing circulation over a doublet in a uniform flow is known as Magnus effect.
2) The path deviation of a cricket ball from its original trajectory is due to the Magnus effect.
Which of these statements is/are correct?
1) The phenomenon of lift produced by imposing circulation over a doublet in a uniform flow is known as Magnus effect.
2) The path deviation of a cricket ball from its original trajectory is due to the Magnus effect.
Which of these statements is/are correct?
Question 9
A body weighs 30 N and 15 N when weighed under submerged conditions in liquids of relative densities 0.8 and 1.2 respectively. What is the volume of the body in litres ________?
Question 10
A hydrometer weighs 0.03 N and has a stem at the upper end which is cylindrical and 3 mm in diameter. It will float deeper in oil of specific gravity 0.75, than in alcohol of specific gravity 0.8 by how much amount?
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