GATE XE Flow and Fluid Properties PYQs & Answers — Page 3

Questions 21–29 of 29. Imported answers require independent review unless marked reviewed.

The variation of shear stress (

) against strain rate (

) is given in the Figure. Identify the line/curve among P, Q, R and S, that represents an ideal fluid.

Diagram for Engineering Sciences question 2

Your answerChoose one option.

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A body is under stable equilibrium in a homogeneous fluid, where CG and CB are center of gravity and center of buoyancy, respectively.

Two statements ‘P’ and ‘Q’ are given below:

P: For a fully submerged condition, CG should always be below CB

Q: For a floating body, CG need not be below CB

Choose the option that is valid for the present situation.

Your answerChoose one option.

P is False; Q is True when metacentre is below CG

P is False; Q is True when metacentre is above CG

P is True; Q is True when metacentre is below CG

P is True; Q is True when metacentre is above CG

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In an inverted manometer (as shown in the Figure), the pressure difference,

is 100 kPa.

Use specific gravity of oil as 0.8, density of water as 1000 kg/m

, density of mercury as 13600 kg/m

and acceleration due to gravity as 10 m/s

The height of the water column,

is ______ cm. (rounded off to one decimal place).

Diagram for Engineering Sciences question 21

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For stable equilibrium of a floating body, which one of the following statements is correct?

Your answerChoose one option.

Centre of gravity must be located below the centre of buoyancy.

Centre of buoyancy must be located below the centre of gravity.

Metacentre must be located below the centre of gravity.

Centre of gravity must be located below the metacentre.

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The mercury manometer shown in the figure below is connected to a water pipe at one end while the other end is open to the atmosphere. The density of water is

, the specific gravity of mercury is 13.6 and the gravitational acceleration

. The gage pressure

(in

, rounded off to 2 decimal places) in the water pipe is ______.

Diagram for Engineering Sciences question 17

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Rheological diagram of different types of fluids is shown in figure. Column I represents the nature of the fluid and column II represents the curve showing the variation of shear stress against shear strain rate.

Column I (i) Newtonian (ii) Shear thinning (iii) Shear thickening (iv) Bingham plastic

Column II M N O P

The most appropriate match between columns I and II is,

Diagram for Engineering Sciences question 1

Your answerChoose one option.

(i) – O; (ii) – N; (iii) – P; (iv) – M

(i) – O; (ii) – P; (iii) – N; (iv) – M

(i) – P; (ii) – O; (iii) – M; (iv) – N

(i) – P; (ii) – O; (iii) – N; (iv) – M

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A parallelepiped of (2 m × 2 m) square cross-section and 10 m in length, is partially floating in water upto a depth of 1.2 m, with its longest side being horizontal. The specific gravity of the block is

Your answerChoose one option.

0.8

0.6

0.5

0.4

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In a 5 m deep vertical cylindrical tank, water is filled up to a level of 3 m from the bottom and the remaining space is filled with oil of specific gravity 0.88. Assume density of water as 1000 kg/m

and acceleration due to gravity to be 10 m/s

. The gauge pressure (in kN/m

, rounded off to the first decimal place) at a depth of 2.5 m from the top of the tank will be ________.

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A spherical balloon of diameter 15 m is supposed to lift a load of 3000 N. The lifting of load is achieved by heating the air inside the balloon. Assume, air to be an ideal gas and atmospheric pressure either outside or inside the balloon. The value of acceleration due to gravity is 9.81 m/s² and the values of temperature and density of atmospheric air are 15°C and 1.2 kg/m³, respectively. In order to lift the specified load, the air inside the balloon should be heated to a temperature (°C) of __________

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GATE XE Flow and Fluid Properties PYQs

Question 2

Question 3

Question 21

Question 1

Question 17

Question 1

Question 10

Question 19

Question 22