Zero at the pipe wall and is a universal constant
Independent of radial distance from the pipe axis
Independent of the shear stress
Useful for computing laminar flow problems
✅ The correct answer is option D.
Fluid Mechanics MCQs
462. Which of the following is an undesirable property of a manometric liquid?
Non-sticky & non-corrosive nature
High vapour pressure
Low viscosity & surface tension
Low co-efficient of thermal expansion
✅ The correct answer is option B.
463. For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary
Directly as square of gas density
Directly as gas density
Directly as square root of gas density
Inversely as gas density
✅ The correct answer is option B.
464. Froude number is the ratio of
Shear stress to gravitational stress
Drag stress to shear stress
Inertial stress to shear stress
Inertial stress to gravitational stress
✅ The correct answer is option D.
466. __________ flow means the flow of incompressible fluid with no shear.
Potential
Streamline
Creep
Boundary layer
✅ The correct answer is option A.
467. What is the ratio of fluid carrying capacity of two pipes having diameters d₁ and d₂ respectively?
(d₁/d₂)0.8
(d₁/d₂)0.5
(d₁/d₂)
(d₁/d₂)2
✅ The correct answer is option B.
468. The pump used for irrigation purposes is generally designed for
Large capacity & high head
Large capacity & low head
Small capacity & high head
Small capacity & low head
✅ The correct answer is option B.
469. The Prandtl pitot tube measures the
Velocity at a point in the flow
Pressure at a point
Average flow velocity
Pressure difference in pipe flow
✅ The correct answer is option A.
470. The pressure head of a flow meter remains constant for
Venturimeter
Orificemeter
Rotameter
Pitot tube
✅ The correct answer is option C.