Streamline in a flow is:

This question was previously asked in
SSC JE ME Previous Paper 8 (Held on: 27 October 2020 Evening)
View all SSC JE ME Papers >
  1. tangent to the velocity vector at any instant in time
  2. actual path followed by a fluid particle
  3. locus of fluid particles that have earlier passed through a given point
  4. tangent to the acceleration vector at any instant in time

Answer (Detailed Solution Below)

Option 1 : tangent to the velocity vector at any instant in time
Free
RRB JE CBT I Full Test - 23
14.3 K Users
100 Questions 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

Explanation:

Streamlines:

  • Streamlines are a family of curves that are instantaneously tangent to the velocity vector of the flow.
  • These show the direction in which a massless fluid element will travel at any point in time.

Streaklines:

  • Streaklines are the loci of points of all the fluid particles that have passed continuously through a particular spatial point in the past.
  • Dye steadily injected into the fluid at a fixed point extends along a streak line.

Pathlines:

  • Pathlines are the trajectories that individual fluid particles follow.
  • These can be thought of as "recording" the path of a fluid element in the flow over a certain period.
  • The direction the path takes will be determined by the streamlines of the fluid at each moment in time.

RRB JE CE R 15 Fluid Mechanics Subject Test Part 1(Hindi) - Final images nita Q12

For steady flow, path lines, streamlines, and streaklines coincide.
Latest SSC JE ME Updates

Last updated on May 28, 2025

-> SSC JE ME Notification 2025 will be released on June 30. 

-> The SSC JE Mechanical engineering application form will be available from June 30 to July 21. 

-> SSC JE 2025 CBT 1 exam for Mechanical Engineering will be conducted from October 2 to 31. 

-> SSC JE exam to recruit Junior Engineers in different disciplines under various departments of the Central Government.

-> The selection process of the candidates for the SSC Junior Engineer post consists of Paper I, Paper II, Document Verification, and Medical Examination.

-> Candidates who will get selected will get a salary range between Rs. 35,400/- to Rs. 1,12,400/-.

-> Candidates must refer to the SSC JE Previous Year Papers and SSC JE Civil Mock Test, SSC JE Electrical Mock Test, and SSC JE Mechanical Mock Test to understand the type of questions coming in the examination.

Get Free Access Now
Hot Links: teen patti club teen patti royal teen patti classic teen patti