GATE CE 2020: Fluid Mechanics Quiz 1

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Question 1

The pressure intensity is same in all directions at a point in a fluid ______.

• Aonly when fluid is frictionless and incompressible
• Bonly when fluid is frictionless and is at rest
• Conly when fluid is frictionless
• DNone of the above

Question 2

Which of the following is CORRECT about the viscosity of gas?

• AInversely proportional to the temperature
• BIncreases with an increase in the temperature
• CIndependent of pressure
• DIndependent of temperature

Question 3

A large tank shown in figure has a vertical pipe 70 cm long and 2 cm in diameter. The tank contains an oil of density 920 and viscosity 1.5 poise. The velocity thourgh the tube when the height of oil level of the tank is 0.80 m above the pipe inlet is____m/s.

• A1.49
• B1.56
• C1.45
• D1.48

Question 4

A fluid is stored in a container. The fluid can be approximated as an ideal fluid having no viscous effect. The pressure inside the fluid is 2 Mpa. The container is suddenly compressed by uniform force from outside and as a result of this the volume decreases by 2m³ . Initial volume of the of the container is 20m3. Find the isothermal bulk modulus of the fluid.

• A2.22 Mpa
• B2 Mpa
• C
• D4 .6 Mpa

Question 5

The cylinder is rotated about the central axia as shown in figure. The force (in N) on the bottom of the cylinder, when the rotation speed is such that the water just touches the point A will be

• A157.8
• B187.5
• C142.1
• D117.5

Question 6

A sluice inlet in a dam with streamlined entrance is shown in figure below.

If cavitation is expected to occur, it will first appear at the point

• A1
• B2
• C3
• D4

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