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WorksheetsCE 373: Common Fluid Properties (Part 2)
Total questions: 15
Worksheet time: 8mins
Which property is defined as the mass of a fluid per unit volume?
Specific weight
Density
Specific gravity
Specific volume
The SI unit of density is:
kg/L
g/cm³
kg/m³
N/m³
The density of air can be determined using the ideal gas law as:
ρ = p/RT
ρ = RT/p
ρ = V/m
ρ = γ/g
Specific weight (γ) of a fluid is given by:
γ = ρ × g
γ = V/m
γ = p/RT
γ = 1/ρ
The reciprocal of density is called:
Specific weight
Specific volume
Specific gravity
Compressibility
The specific gravity of a liquid is the ratio of its density to:
Density of gas
Density of mercury
Density of air
Density of water
If the specific gravity of mercury is 13.6, then its density is:
1000 kg/m³
13,600 kg/m³
136 kg/m³
1.36 × 10³ kg/m³
Absolute viscosity (μ) relates shear stress and velocity gradient as:
μ = τ / (dV/dy)
μ = τ × (dV/dy)
μ = ρ × g
μ = γ × V
Kinematic viscosity (ν) is expressed as:
ν = μ × ρ
ν = μ / ρ
ν = τ / ρ
ν = 1 / μ
The spherical shape of droplets is due to:
Viscosity
Surface tension
Capillarity
Compressibility
Capillarity is caused by:
Density variations
Gravitational effects
Balance between adhesion and cohesion
Elastic modulus of the fluid
Bulk modulus of elasticity (EB) is defined as:
EB = ΔV / VΔp
EB = Δp / (ΔV/V)
EB = τ / γ
EB = ρRT
Compressibility (β) of a fluid is given as:
β = - (ΔV/V) / Δp
β = Δp / ΔV
β = γ / ρ
β = VΔp / ΔV
In isothermal process of an ideal gas, which law applies?
Boyle's Law (pV = constant)
Charles's Law (V/T = constant)
Gay-Lussac's Law (p/T = constant)
Avogadro's Law
The velocity of pressure (sound) waves in a fluid is given by:
c = μ/ρ
c = EB × ρ
c = √(EB/ρ)
c = RT/p
