Related InterviewSolutions

• The head over a V-notch at the end of a channel is 75 cm. If an error of 0.15 cm is possible In the measurement of the head, then the percentage error in computing the discharge is
• What is the momentum thickness for the boundary layer with velocity distribution uU=yδ?
• The velocity field of an incompressible flow is given byV= (a1x+a2y+a3z)i+(b1x+b2y+b3z)j+(c1x+c2y+c3z)k, where a1=2 and c3=−4. The value of b2 is______2
• Two immiscible, incompressible, viscous fluids having same densities but different viscosities are contained between two infinite horizontal parallel plates, 2 m apart as shown below. The bottom plate is fixed and the upper plate moves to the right with a constant velocity of 3 m/s. With the assumptions of Newtonian fluid, steady and fully developed laminar flow with zero pressure gradient in all directions, the momentum equations simplify to d2udy2=0If the dynamic viscosity of the lower fluid μ2, is twice that of the upper fluid μ1, then the velocity at the interface (round off to two decimal places) is m/s.1
• For a two-dimensional irrotational flow, the velocity potential is defined as ϕ=loge (x2+y2). Which of the following is a possible stream function, ψ, for this flow?
• For accurate flow measurement in open channels, an arrangement for aeration under the nappe is necessary when the weir used is
• A triangular gate with a base width of 2 m and a height of 1.5 m lies in a vertical plane. The top vertex of the gate is 1.5 m below the surface of a tank which contains oil of specific gravity 0.8. Considering the density of water and acceleration due to gravity to be 1000 kg/m3 and 9.81 m/s2 respectively, the hydrostatic force (in kN) exerted by the oil on the gate is 29.43
• Consider a fully developed steady laminar flow of an incompressible fluid with viscosity μ through a circular pipe of radius R. Given that the velocity at a radial location of R/2 from the centerline of the pipe is U1, the shear stress at the wall is KμU1/R, where K is _____2.66
• A circular disc of diameter d is immersed vertically in a liquid of density P. The top most point of the disc just touches the liquid surface. What is the depth of Centre of pressure ?
• A particle moves along a curve whose parametric equations are: x=t3+2t, y=−3e−2t and z=2 sin (5t), where x, y and z show variations of the distance covered by the particle (in cm) with time t (in s). The magnitude of the acceleration of the particle (in cm/s2 at t=0) is 12