Fluid Mechanics
Fluid Properties
Marks 1Marks 2
Boundary Layer
Marks 1Marks 2Marks 5
Turbulent Flow
Marks 1Marks 2Marks 5
Fluid Kinematics
Marks 1Marks 2
1
GATE ME 2023
MCQ (Single Correct Answer)
+1
-0.33
Air (density = 1.2 kg/m3, kinematic viscosity = 1.5 × 10-5 m2/s) flows over a flat plate with a free-stream velocity of 2 m/s. The wall shear stress at a location 15 mm from the leading edge is τw. What is the wall shear stress at a location 30 mm from the leading edge?
A
τw/2
B
√2τw
C
τw
D
τw/√2
2
GATE ME 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Within a boundary layer for a steady incompressible flow, the Bernoulli equation
A
holds because the flow is steady
B
holds because the flow is incompressible
C
holds because the flow is transitional
D
does not hold because the flow is frictional
3
GATE ME 2007
MCQ (Single Correct Answer)
+1
-0.3
Consider an incompressible laminar boundary layer flow over a flat plate of length $$L$$, aligned with the direction of an incoming uniform free stream. If $$F$$ is the ratio of the drag force on the front half of the plate to the drag force on the rear half, then
A
$$F < {\raise0.5ex\hbox{$\scriptstyle 1$} \kern-0.1em/\kern-0.15em \lower0.25ex\hbox{$\scriptstyle 2$}}$$
B
$$F = {\raise0.5ex\hbox{$\scriptstyle 1$} \kern-0.1em/\kern-0.15em \lower0.25ex\hbox{$\scriptstyle 2$}}$$
C
$$F=1$$
D
$$F>1$$
4
GATE ME 2002
MCQ (Single Correct Answer)
+1
-0.3
If $$'x'$$ is the distance measured from the leading edge of a flat plate, then laminar boundary layer thickness varies as
A
$$1/x$$
B
$${x^{4/5}}$$
C
$${x^2}$$
D
$${x^{1/2}}$$
GATE ME Subjects
Engineering Mechanics
Machine Design
Strength of Materials
Heat Transfer
Production Engineering
Industrial Engineering
Turbo Machinery
Theory of Machines
Engineering Mathematics
Fluid Mechanics
Thermodynamics
General Aptitude