A liquid is flowing in a streamlined manner through a cylindrical pipe. Along a section containing the axis of the pipe, the flow profile will be

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Q: 118 (IAS/1996)
A liquid is flowing in a streamlined manner through a cylindrical pipe. Along a section containing the axis of the pipe, the flow profile will be

question_subject: 

Science

question_exam: 

IAS

stats: 

0,6,14,5,4,5,6

keywords: 

{'cylindrical pipe': [0, 1, 0, 0], 'flow profile': [0, 1, 0, 0], 'liquid': [0, 0, 0, 1], 'streamlined manner': [0, 1, 0, 0], 'pipe': [0, 1, 2, 2], 'iv': [6, 110, 77, 8], 'axis': [0, 0, 0, 1], 'section': [3, 1, 0, 35]}

In a streamlined flow through a cylindrical pipe, the flow of liquid is smooth and regular. If we look on a section containing the axis of the pipe:

Option 1, 2, and 3 shows irregular flow of liquid which indicates turbulent flow rather than streamlined. It could be due to high velocity, higher viscosity, rough surfaces of pipe or change in pressure inside pipe.

Option 4 represents the profile of a streamline flow correctly. The flow is highest at the center, or axis of the pipe, and decreases as we move towards the wall of the pipe due to friction between the liquid particles and the wall of the pipe, causing a parabolic flow profile. So, the correct answer is option 4 which signifies the parabolic flow diagram; fastest in the center and slower near the edges.