Quiz
Chapter 1 Introduction
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Questions in this quiz (6)
1The absolute viscosity μ of a fluid is primarily a function of
- ADensity
- BTemperature
- CPressure
- DVelocity
- ESurface Tension
2An oil has a kinematic viscosity of 1.25 E-4 m^2/s and a specific gravity of 0.80. What is its dynamic viscosity in kg/(m*s)?
- A0.08
- B0.10
- C0.125
- D1.0
- E1.25
3Helium has a molecular weight of 4.003. What is the weight of 2 m^3 of helium at 1 atm and 20 degrees Celsius?
- A3.3 N
- B6.5 N
- C11.8 N
- D23.5 N
- E94.2 N
4The only possible dimensionless group that combines velocity V, body size L, fluid density ρ, and surface tension coefficient σ is:
- AL*ρ*σ/V
- Bρ*V*L^2/σ
- Cρ*σ*V^2/L
- Dσ*L*V^2/ρ
- Eρ*L*V^2/σ
5A certain water flow at 20 degrees Celsius has a critical cavitation number, where bubbles form, Ca = 0.25, where Ca = 2(P_a-P_vap)/(ρ*V^2). If P_a = 1 atm and the vapor pressure is 0.34 pounds per square inch absolute (psia), for what water velocity will bubbles form?
- A12 mi/h
- B28 mi/h
- C36 mi/h
- D55 mi/h
- E63 mi/h
6Two parallel plates, one moving at 4 m/s and the other fixed, are separated by a 5-mm-thick layer of oil of specific gravity 0.80 and kinematic viscosity of 1.25 E-4 m^2/s. What is the average shear stress in the oil?
- A80 Pa
- B100 Pa
- C125 Pa
- D160 Pa
- E200 Pa
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- Quiz on Chapter 1 Introduction, created by Joshua Halsted on 18/08/2017.
- Author
- Joshua Halsted
- Language
- English
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