Practice Problems (3) - Basics of Fluid Mechanics- 1 (Contnd.) - Hydraulic Engineering

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6 questions · about 4 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the value of the universal gas constant?
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Remember the constant relating pressure, volume, temperature, and moles.
Question 2.
What does the bulk modulus of elasticity measure?
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Think about how fluids behave when pressure is applied.
3Question 3.
What does the perfect gas law relate?
- Pressure
- density
- and volume
- Pressure
- volume
- number of moles
- and temperature
- Pressure and speed of sound
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Think about the ideal gas characteristics.
4Question 4.
True or False: In an isentropic process, temperature remains constant.
- True
- False
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Reflect on the definitions of thermodynamic processes.
Question 5.
A piston compresses gas isothermally from 3.0 L to 1.5 L at an initial pressure of 150 kPa. Calculate the final pressure.
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Remember the ideal gas law.
Question 6.
Determine the surface tension of water if a droplet with a radius of 0.5 mm creates a pressure difference of 200 Pa.
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Recall how surface tension is related to pressure difference.

4 more questions in this section. Enroll free to practise them all.