Question: Friction produced by the formation of wakes is called the __________ friction.
[A].disk
skin
form
none of these
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Fluid Mechanics
For turbulent flow of newtonion fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is
Question: For turbulent flow of newtonion fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is
[A].0.5
1
0.66
< 0.5
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
For laminar flow through a closed conduit
Question: For laminar flow through a closed conduit
[A].Vmax = 2Vav
Vmax = Vav
Vmax = 1.5Vav
Vmax = 0.5Vav
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
With increase in temperature, the vapor pressure of liquids
Question: With increase in temperature, the vapor pressure of liquids
[A].increases
increases linearly
decreases
remains constant
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In an incompressible flow of fluid, the fluid
Question: In an incompressible flow of fluid, the fluid
[A].temperature remains constant.
compressibility is greater than zero.
density does not change with pressure & temperature.
is frictionless.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
One stoke (unit of kinematic viscosity) is equivalent to
Question: One stoke (unit of kinematic viscosity) is equivalent to
[A].1 cm2/second
1 m2/second
1 gm/cm. second
1 kg . m/second
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)
Question: With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)
[A].decreases.
increases linearly.
increases exponentially.
remains constant.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Boundary layer exists in flow
Question: Boundary layer exists in flow
[A].of real fluids.
over flat surfaces only.
in pipes only.
of ideal fluids only.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Laminar flow is characterised by the nonexistence of
Question: Laminar flow is characterised by the nonexistence of
[A].pressure fluctuation.
eddies.
deviating velocities.
all (a), (b)&(c).
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
Question: In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
[A].directly proportional to
inversely proportional to
inversely proportional to the square root of
independent of
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.