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An oil of kinematic viscosity 0.25 stokes flows, through a pipe of diameter 10 cm. The flow is critical., at a velocity of
- a)7.2 m/s
- b)5.0 m/s
- c)0.5 m/s
- d)0.72 m/s
Correct answer is option 'C'. Can you explain this answer?
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An oilof kinematic viscosity 0.25 stokes flows, through a pipe of diam...
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Kinematic Viscosity:
The kinematic viscosity of a fluid is a measure of its resistance to flow under the influence of gravity. It is defined as the ratio of dynamic viscosity (μ) to the density (ρ) of the fluid. Kinematic viscosity is denoted by the symbol ν and is measured in stokes.
Critical Flow:
In fluid mechanics, critical flow refers to a specific flow condition where the flow velocity reaches the critical velocity. At the critical velocity, the flow transitions from subcritical flow (flow rate is less than critical) to supercritical flow (flow rate is greater than critical).
Given Data:
Kinematic viscosity (ν) = 0.25 stokes
Pipe diameter (D) = 10 cm = 0.1 m
Calculating Critical Velocity:
The critical velocity (Vc) can be calculated using the formula:
Vc = (g * D)^(1/2)
where g is the acceleration due to gravity (9.81 m/s^2) and D is the pipe diameter.
Vc = (9.81 * 0.1)^(1/2)
Vc = 0.99 m/s
Comparing with Given Velocity:
The given velocity of the oil flow is:
a) 7.2 m/s
b) 5.0 m/s
c) 0.5 m/s
d) 0.72 m/s
Since the given velocity (0.5 m/s) is less than the critical velocity (0.99 m/s), the flow is subcritical. Therefore, option C (0.5 m/s) is the correct answer.
In subcritical flow, the flow velocity is less than the critical velocity, and the flow is characterized by smooth and regular flow patterns. It is important to note that the kinematic viscosity of the fluid does not play a role in determining whether the flow is critical or subcritical. The critical velocity is solely dependent on the pipe diameter and the acceleration due to gravity.
The kinematic viscosity of a fluid is a measure of its resistance to flow under the influence of gravity. It is defined as the ratio of dynamic viscosity (μ) to the density (ρ) of the fluid. Kinematic viscosity is denoted by the symbol ν and is measured in stokes.
Critical Flow:
In fluid mechanics, critical flow refers to a specific flow condition where the flow velocity reaches the critical velocity. At the critical velocity, the flow transitions from subcritical flow (flow rate is less than critical) to supercritical flow (flow rate is greater than critical).
Given Data:
Kinematic viscosity (ν) = 0.25 stokes
Pipe diameter (D) = 10 cm = 0.1 m
Calculating Critical Velocity:
The critical velocity (Vc) can be calculated using the formula:
Vc = (g * D)^(1/2)
where g is the acceleration due to gravity (9.81 m/s^2) and D is the pipe diameter.
Vc = (9.81 * 0.1)^(1/2)
Vc = 0.99 m/s
Comparing with Given Velocity:
The given velocity of the oil flow is:
a) 7.2 m/s
b) 5.0 m/s
c) 0.5 m/s
d) 0.72 m/s
Since the given velocity (0.5 m/s) is less than the critical velocity (0.99 m/s), the flow is subcritical. Therefore, option C (0.5 m/s) is the correct answer.
In subcritical flow, the flow velocity is less than the critical velocity, and the flow is characterized by smooth and regular flow patterns. It is important to note that the kinematic viscosity of the fluid does not play a role in determining whether the flow is critical or subcritical. The critical velocity is solely dependent on the pipe diameter and the acceleration due to gravity.
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An oilof kinematic viscosity 0.25 stokes flows, through a pipe of diameter 10 cm. The flow is critical., at a velocity ofa)7.2 m/sb)5.0 m/sc)0.5 m/sd)0.72 m/sCorrect answer is option 'C'. Can you explain this answer?
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An oilof kinematic viscosity 0.25 stokes flows, through a pipe of diameter 10 cm. The flow is critical., at a velocity ofa)7.2 m/sb)5.0 m/sc)0.5 m/sd)0.72 m/sCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about An oilof kinematic viscosity 0.25 stokes flows, through a pipe of diameter 10 cm. The flow is critical., at a velocity ofa)7.2 m/sb)5.0 m/sc)0.5 m/sd)0.72 m/sCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An oilof kinematic viscosity 0.25 stokes flows, through a pipe of diameter 10 cm. The flow is critical., at a velocity ofa)7.2 m/sb)5.0 m/sc)0.5 m/sd)0.72 m/sCorrect answer is option 'C'. Can you explain this answer?.
An oilof kinematic viscosity 0.25 stokes flows, through a pipe of diameter 10 cm. The flow is critical., at a velocity ofa)7.2 m/sb)5.0 m/sc)0.5 m/sd)0.72 m/sCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about An oilof kinematic viscosity 0.25 stokes flows, through a pipe of diameter 10 cm. The flow is critical., at a velocity ofa)7.2 m/sb)5.0 m/sc)0.5 m/sd)0.72 m/sCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An oilof kinematic viscosity 0.25 stokes flows, through a pipe of diameter 10 cm. The flow is critical., at a velocity ofa)7.2 m/sb)5.0 m/sc)0.5 m/sd)0.72 m/sCorrect answer is option 'C'. Can you explain this answer?.
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