Home » Quizzes » Fluid Mechanics MCQ Book solution Quiz 01

# Fluid Mechanics MCQ Book solution Quiz 01

#### Pascal Second is a unit of

Correct! Wrong!

SI unit of Dynamic viscosity is Pascal Second or Ns/m2 or Poise SI unit of Kinematic viscosity is Stokes or m2/sec 1 stoke = 10^(-4) m2/s 1 poise = 0.1 pa.s

#### An ideal fluid is

Correct! Wrong!

Ideal fluid is incompressible and have no viscosity. Onlu imaginary Fluid

#### The unit of Kinematics viscosity is

Correct! Wrong!

1 stoke = 0.01 cm2/sec = 0.0001 m2/sec

#### If the dynamic viscosity of a fluid is 0.5 and specific gravity is 0.5, then the Kinetic viscosity of the fluid in stoke is

Correct! Wrong!

Kinematic viscosity = DynamicViscosity/SpecificGravity = 0.5/0.5 =1

#### The viscosity of a gas

Correct! Wrong!

Viscosity for gas increases with increase in temperature. Viscosity for liquid increases with decrease in temperature.

Correct! Wrong!

T=u.du/dy

Correct! Wrong!

#### The intensity of pressure developed by surface tension of 0.075 N/m in a droplet of water of 0.075 mm diameter is

Correct! Wrong!

ΔP = 2σ/d for jet ΔP = 8σ/d for soap bubble ΔP = 4σ/d for droplet = 4 x 0.075/0.075 x 10^-3 = .004 N/mm2 = 0.4 N/cm2

Correct! Wrong!

#### 1 kilo Pascal is equal to

Correct! Wrong!

1 Pascal = 1 N/m2 Kilo = 10^3 1 kilo Pascal = 1000 N/m2

Correct! Wrong!

Correct! Wrong!

#### Pressure of 200 kPa is equivalent to a head of X metres of carbon tetrachloride of relative density 1.59 where x is equal to

Correct! Wrong!

Density = 1.59*water density = 1590 kg/m3 P = pgh 200x10^3 = 1590*9.81*h h = 12.82 m

Correct! Wrong!