Question:
Crude oil of kinematic viscosity 2.25 Stokes flows through a 20 cm diameter pipe. If the rate of flow is 1.5 liters/sec, what will be the type of flow?
Crude oil of kinematic viscosity 2.25 Stokes flows through a 20 cm diameter pipe. If the rate of flow is 1.5 liters/sec, what will be the type of flow?
Show Hint
Use the Reynolds number to quickly identify flow regimes: laminar, transitional, or turbulent.
Updated On: Dec 28, 2024
- Laminar
- Turbulent
- Transition
- Rotational
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The flow type is determined using the Reynolds number formula:
\( Re = \frac{\rho v D}{\mu} \)
Given \( D = 20 \, \text{cm}, \, v = 1.5 \, \text{L/sec}, \) and kinematic viscosity \( \nu = 2.25 \, \text{Stokes}, \) the calculated Reynolds number is below 2000, indicating laminar flow.
Was this answer helpful?
0
0
Top Questions on Fluid Mechanics
- A body of mass \( m \) connected to a massless and unstretchable string goes in a vertical circle of radius \( R \) under gravity \( g \). The other end of the string is fixed at the center of the circle. If velocity at the top of the circular path is \( v = \sqrt{ngR} \), where \( n \geq 1 \), then the ratio of kinetic energy of the body at bottom to that at top of the circle is:
- JEE Main - 2025
- Physics
- Fluid Mechanics
- A tube of length L is shown in the figure. The radius of cross section at point (1) is 2 cm and at the point (2) is 1 cm, respectively. If the velocity of water entering at point (1) is 2 m/s, then velocity of water leaving the point (2) will be:
- JEE Main - 2025
- Physics
- Fluid Mechanics
- A small rigid spherical ball of mass \( M \) is dropped in a long vertical tube containing glycerine. The velocity of the ball becomes constant after some time. If the density of glycerine is half of the density of the ball, then the viscous force acting on the ball will be (consider \( g \) as acceleration due to gravity):
- JEE Main - 2025
- Physics
- Fluid Mechanics
- Given below are two statements:
Statement-I: The hot water flows faster than cold water.
Statement-II: Soap water has higher surface tension as compared to fresh water.
In the light of the above statements, choose the correct answer from the options given below:- JEE Main - 2025
- Physics
- Fluid Mechanics
- Water flows in a horizontal pipe whose one end is closed with a valve. The reading of the pressure gauge attached to the pipe is \( P_1 \). The reading of the pressure gauge falls to \( P_2 \) when the valve is opened. The speed of water flowing in the pipe is proportional to:
- JEE Main - 2025
- Physics
- Fluid Mechanics
View More Questions
Questions Asked in CUET PG exam
- What is the correct verb form: He, as well as his friends, ?
- Which preposition is correct: Chanakya lived ?
- CUET (PG) - 2025
- Prepositions
- Identify the possessive noun: My office car is parked elsewhere.
- Which tense is appropriate: How did Saira ?
- Complete the sentence: There is a growing synthesis between humanism and ?
- CUET (PG) - 2025
- Sentence Completion
View More Questions