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MCQ Practice Test & Solutions: Test: Fluid Flow Kinematics - 2 (10 Questions)

You can prepare effectively for Civil Engineering (CE) GATE Civil Engineering (CE) 2027 Mock Test Series with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Fluid Flow Kinematics - 2". These 10 questions have been designed by the experts with the latest curriculum of Civil Engineering (CE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 30 minutes
  • - Number of Questions: 10

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Test: Fluid Flow Kinematics - 2 - Question 1

A 2-D flow having velocity V = (x + 2y + 2)i + (4 - y)j will be

Test: Fluid Flow Kinematics - 2 - Question 2

In a flow net

Test: Fluid Flow Kinematics - 2 - Question 3

A stream function is

Detailed Solution: Question 3

A stream function is defined by following characteristic:
The partial derivative of stream function w.r.t y will give velocity in x-direction.
The partial derivative of stream function w.r.t x will give velocity in negative y-direction.
It is valid for steady, incompressible flow since, is satisfies the continuity equation

Test: Fluid Flow Kinematics - 2 - Question 4

The continuity equation for steady incompressible flow is expressed in vector notation as

Test: Fluid Flow Kinematics - 2 - Question 5

In a converging steady flow there is

Detailed Solution: Question 5

Test: Fluid Flow Kinematics - 2 - Question 6

In two dimensional flow, the equation of a streamline is given as 

Test: Fluid Flow Kinematics - 2 - Question 7

The concept of stream function which is based on the principle of continuity is applicable to

Detailed Solution: Question 7

Velocity potential function is valid for 3-dimensional flow while stream function is valid for 2 dimensional flow.

Test: Fluid Flow Kinematics - 2 - Question 8

Which of the following velocity potentials satisfies continuity equation?

Detailed Solution: Question 8

For the velocity potential function to satisfy continuity equation: 
Where φ is velocity potential, φ = x2 - y2 satisfies this equation

Test: Fluid Flow Kinematics - 2 - Question 9

In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is 

Detailed Solution: Question 9

V1y1 = V2y2
⇒ 30 x 2 = V2 x 1.5 ⇒ v2 = 40 cm/s

Test: Fluid Flow Kinematics - 2 - Question 10

The velocity potential function for a source varies with distance r as

Detailed Solution: Question 10

Velocity at any point r in the flow field of source is given by, Vr = q/2πr.

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