Fluid Mechanics Transition from laminar flow to turbulent flow is aided by the Vibration All of these Pressure gradient and the compressibility of the flowing medium Surface roughness and curvature (i.e.sharp corners) Vibration All of these Pressure gradient and the compressibility of the flowing medium Surface roughness and curvature (i.e.sharp corners) ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). Q = Q₁ + Q₂ + Q₃ V₁ = V₂ = V₃ Q₁ = Q₂ = Q₃ F = f₁ + f₂ + f₃ Q = Q₁ + Q₂ + Q₃ V₁ = V₂ = V₃ Q₁ = Q₂ = Q₃ F = f₁ + f₂ + f₃ ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of All of these Relative roughness Friction co-efficient for flows at equal Reynold number Absolute roughness All of these Relative roughness Friction co-efficient for flows at equal Reynold number Absolute roughness ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary. I, II, V II, IV, V II, III, V I, II, III I, II, V II, IV, V II, III, V I, II, III ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe. Semi-circle Semi-ellipse Hyperbola Parabola Semi-circle Semi-ellipse Hyperbola Parabola ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Volute type of casing is provided in a centrifugal pump to Convert velocity head to pressure head Convert pressure head to velocity head Increase the discharge Reduce the discharge fluctuation Convert velocity head to pressure head Convert pressure head to velocity head Increase the discharge Reduce the discharge fluctuation ANSWER DOWNLOAD EXAMIANS APP
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