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Questions and Answers
Atmospheric pressure at a location is 100 kPa, and the gauge pressure is 75 kPa (vacuum). What is the absolute pressure at that location?
Atmospheric pressure at a location is 100 kPa, and the gauge pressure is 75 kPa (vacuum). What is the absolute pressure at that location?
- 75 kPa
- 125 kPa
- 175 kPa
- 25 kPa (correct)
What are the units of surface tension?
What are the units of surface tension?
- N/m²
- Nâ‹…m
- N/m (correct)
- N
Which of the following statements best describes the relationship between vapor pressure and temperature for a fluid?
Which of the following statements best describes the relationship between vapor pressure and temperature for a fluid?
- Vapor pressure remains constant regardless of temperature changes.
- Vapor pressure increases linearly with increasing temperature.
- Vapor pressure decreases linearly with increasing temperature.
- Vapor pressure increases exponentially with increasing temperature. (correct)
Why is it important to consider compressibility in fluid mechanics?
Why is it important to consider compressibility in fluid mechanics?
How is specific gravity related to the density of water?
How is specific gravity related to the density of water?
What happens to the mass density of a gas if the volume is compressed while keeping the mass constant?
What happens to the mass density of a gas if the volume is compressed while keeping the mass constant?
If the atmospheric pressure is 100 kPa and the gauge pressure is -25 kPa, what is the absolute pressure?
If the atmospheric pressure is 100 kPa and the gauge pressure is -25 kPa, what is the absolute pressure?
What property of a fluid describes its resistance to flow?
What property of a fluid describes its resistance to flow?
How does increasing temperature generally affect the viscosity of liquids and gases?
How does increasing temperature generally affect the viscosity of liquids and gases?
Which of the following is NOT a property of fluid?
Which of the following is NOT a property of fluid?
Flashcards
What is pressure?
What is pressure?
The force acting perpendicular to a surface per unit area.
What is hydrostatic pressure?
What is hydrostatic pressure?
The pressure exerted by a fluid at rest due to the weight of the fluid above a given point.
How to calculate absolute pressure?
How to calculate absolute pressure?
Atmospheric pressure (100 kPa) + gauge pressure (75 kPa vacuum) equals absolute pressure (25kPa).
What is surface tension?
What is surface tension?
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What is the unit of surface tension?
What is the unit of surface tension?
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What is Vapour Pressure?
What is Vapour Pressure?
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What is Compressibility?
What is Compressibility?
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What is Specific Gravity?
What is Specific Gravity?
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What is Mass Density?
What is Mass Density?
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Study Notes
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All questions are compulsory
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Marks assigned to each question are given in front of every question
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Unless mentioned otherwise, the question carries assigned marks only
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In case of any doubt or dispute, the English version question should be treated as final
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At a certain place, the value of atmospheric pressure is 100 kPa and gauge pressure is 75 kPa (vacuum).
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The absolute pressure of the place is: (स) 25 kPa
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The unit of surface tension is: (a) N/m
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Properties of fluid to write about:
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Vapour Pressure
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Compressibility
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Specific gravity
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Mass Density
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Find the following:
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total pressure
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location of centre of pressure
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