GATE XE year:2023 PYQs & Answers — Page 3

Questions 21–30 of 175. Imported answers require independent review unless marked reviewed.

Topic practice 175 questionsPage 3 of 18

Let

be the solution of the initial boundary value problem

Then the value of

is __________ (in integer).

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Match the following measuring instruments with the appropriate figures.

I – Pitot probe

II – Pitot-static probe

III – Piezometer

Diagram for Engineering Sciences question 22

Your answerChoose one option.

I – P; II – Q; III – R

I – R; II – Q; III – P

I – R; II – P; III – Q

I – Q; II – P; III – R

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Among the following non-dimensional numbers, which one characterizes periodicity present in a transient flow?

Your answerChoose one option.

Froude number

Strouhal number

Peclet number

Lewis number

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For an incompressible boundary layer flow over a flat plate shown in the figure, the momentum thickness is expressed as

Diagram for Engineering Sciences question 24

Your answerChoose one option.

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Among the shear stress versus shear strain rate curves shown in the figure, which one corresponds to a shear thinning fluid?

Diagram for Engineering Sciences question 25

Your answerChoose one option.

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Consider steady incompressible flow over a flat plate, where the dashed line represents the edge of the boundary layer, as shown in the figure. Which one among the following statements is true?

Diagram for Engineering Sciences question 26

Your answerChoose one option.

Bernoulli’s equation can be applied in Region I between any two arbitrary points.

Bernoulli’s equation can be applied in Region I only along a streamline.

Bernoulli’s equation cannot be applied in Region II.

Bernoulli’s equation cannot be applied in Region I.

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An inviscid steady incompressible flow is formed by combining a uniform flow with velocity

and a clockwise vortex of strength

at the origin, as shown in the figure. Velocity potential (

) for the combined flow in polar coordinate

Diagram for Engineering Sciences question 27

Your answerChoose one option.

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Which of the following statements are true?

(i) Conservation of mass for an unsteady incompressible flow can be represented as

, where

denotes velocity vector.

(ii) Circulation is defined as the line integral of vorticity about a closed curve.

(iii) For some fluids, shear stress can be a non-linear function of the shear strain rate.

(iv) Integration of the Bernoulli’s equation along a streamline under steady-state leads to the Euler’s equation.

Your answerChoose one option.

(i), (ii) and (iv) only

(i), (ii) and (iii) only

(i) and (iii) only

(ii) and (iv) only

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For a two-dimensional flow field given as

, a streamline passes through points

and

. The value of

Your answerChoose one option.

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A stationary object is fully submerged in a static fluid, as shown in the figure. Here, CG and CB stand for center of gravity and center of buoyancy, respectively. Which one(s) among the following statements are true?

Diagram for Engineering Sciences question 30

Your answerSelect all correct options. You can choose more than one.

The object is in stable equilibrium if

The object is in neutral equilibrium if

The object is in unstable equilibrium if

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GATE XE year:2023 PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30