4000
2100
1500
3000
✅ The correct answer is option B.
Fluid Mechanics MCQs
Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.
∂/∂s = 0
∂/∂t = 0
∂/∂s = constant
∂/∂t = constant
✅ The correct answer is option B.
Nominal size of a pipe is an indication of its __________ diameter.
Inner
Outer
Approximate
None of these
✅ The correct answer is option C.
In which of the following body shapes, the pressure drag is large compared to the friction drag?
Stream line body
Two dimensional body
Bluff body
None of these
✅ The correct answer is option C.
For an unstable equilibrium of a floating body (where, M = metacentre.)
M is above G
M is below G
M & G coincide
None of these
✅ The correct answer is option B.
A free jet of water of cross-sectional area 0.01m² and a velocity of 20 m/s strikes a plate and then flows in a plane parallel to the plate as shown in the figure below. The horizontal component of the force on the support is
200 N
400 N
2000 N
4000 N
✅ The correct answer is option D.
Dimension of absolute viscosity is
ML⁻¹T⁻¹
MLT⁻¹
ML⁻¹T
MLT
✅ The correct answer is option A.
Which is not a variable head meter?
Venturimeter
Pitot tube
Rotameter
None of these
✅ The correct answer is option C.
In a/an __________ , the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure.
Rotameter
Pitot tube
Venturimeter
Flow nozzle
✅ The correct answer is option B.
What is the shear rate at the pipe wall, in case of laminar flow of Newtonion fluids in a pipe of diameter ‘D’ & length ‘L’ incurring a pressure drop ‘Δp’ with average velocity ‘Vavg’?
D Δp/8L
D Δp/4L
8 . Vavg/D
4 . Vavg/D
✅ The correct answer is option C.