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WorksheetsQuality Assessment FM Quiz No 1
Total questions: 27
Worksheet time: 14mins
Which factor primarily influences the formation of a boundary layer in pipe flow?
Pipe length
Pipe material
Fluid viscosity
Pipe diameter
The flow in a pipe becomes fully developed when:
The velocity profile is uniform across the pipe diameter
The velocity profile no longer changes along the pipe's length
The flow reaches the pipe's centerline
The fluid reaches a certain temperature
Which term describes the point in a pipe where the boundary layer merges, and flow becomes fully developed?
Hydraulic diameter
Critical point
Laminar transition point
Entrance length
A venturiflume is used to measure
pressure of liquid
discharge of liquid
pressure difference between two points in a channel
pressure difference between two points in a pipe
According to Archimede's principle, if a body is immersed partially or fully in a fluid then the buoyancy force is _______ the weight of fluid displaced by the body.
equal to
less than
more than
unpredictable
If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
neutral equilibrium
stable equilibrium
unstable equilibrium
none of these
As the temperature increases the viscosity of gas.
decreases
increases
increases and decreases
remains same
Which of the following best describes the change in boundary layer thickness along a flat plate?
It remains constant
It decreases along the plate
It increases along the plate
It fluctuates randomly
The critical Reynolds number for transition from laminar to turbulent boundary layer in flow over a flat plate is approximately:
2300
500,000
10,000
2000
The major loss in pipe flow is primarily due to:
Bends and fittings in the pipe
The change in pipe diameter
Friction along the length of the pipe
Sudden expansion or contraction in the pipe
Minor losses in pipes are caused by:
Pipe length only
Friction along the pipe surface
Components like valves, bends, and fittings
Changes in fluid density
The head loss due to friction in a pipe can be calculated using:
Bernoulli's equation
Euler equation
Darcy-Weisbach equation
Archimedes' principle
In the Darcy-Weisbach equation, the friction factor 'f' for laminar flow in a pipe is given by:
f=0.079/Re
f=16/Re
f=64/Re
f=1/Re
Bernoulli's equation is derived based on the principle of:
Conservation of momentum
Conservation of mass
Conservation of energy
Conservation of pressure
Which of the following assumptions is NOT required for Bernoulli's equation to be valid?
The flow is incompressible
The flow is steady
The flow occurs in a closed system
The flow is frictionless
According to Bernoulli’s equation, if the velocity of a fluid increases along a streamline, the pressure:
Remains constant
Increases
Decreases
Depends on fluid density only
For Poiseuille flow between two parallel plates, the velocity profile across the gap is:
Linear
Parabolic
Constant
Sinusoidal
In Poiseuille flow between two flat plates, the maximum velocity occurs at:
The center between the plates
The walls of the plates
One-third of the distance from the wall
Near the outlet of the plates
In Couette flow, fluid motion between two flat plates is induced by:
Pressure difference along the plates
The movement of one plate relative to the other
Temperature gradient between the plates
External gravitational forces
In Poiseuille flow, fluid motion between two flat plates is induced by:
Pressure difference along the plates
The movement of one plate relative to the other
Temperature gradient between the plates
External gravitational forces
In Couette flow between two parallel plates, if one plate is moving with a constant velocity and the other is stationary, the velocity profile is:
Parabolic
Linear
Sinusoidal
Exponential
Hydrostatic pressure in a fluid at rest depends on:
The depth of the fluid only
The shape of the container
The density of the fluid and the depth
The surface area of the fluid
If the depth of a liquid doubles, the hydrostatic pressure at that depth will:
Remain the same
Double
Be reduced to half
Quadruple
A floating body is considered stable if its center of gravity is:
Above the center of buoyancy
Below the center of buoyancy
At the same level as the center of buoyancy
Outside the body
The name of the point at which a tilted floating body’s buoyant force meets the center line of the body:
Center of gravity
Center of buoyancy
Metacenter
Pivot point
For a floating body to be in stable equilibrium, the metacenter should be:
At the same level as the center of gravity
Above the center of gravity
Below the center of gravity
Outside the water surface
The distance between the metacenter and the center of gravity is called the:
Center of buoyancy
Metacentric height
Buoyant distance
Stability height
