Biofluid Mechanics Mid - I, September - 2014

1.A fluid exhibiting a linear response is categorized as
  • Non-newtonian fluid
  • Thixotropic fluid
  • Newtonian fluid
  • None of the above
Answer: C
2.The relationship between pressure and velocity in ideal fluids is described quantitatively by
  • Bernoulli's equation
  • ideal gas law
  • Hagen-Poiseuille law
  • Newton’s law
Answer: A
3.In the Hagen-Poiseuille equation for laminar flow through a round pipe, the resistance offered by the fluid is
  • Directly proportional to the diameter of the tube
  • Proportional to the radius of the tube
  • Inversely proportional to the square of the tube’s radius
  • Inversely proportional to four times that of the radius
Answer: D
4.A ______ is an arbitrarily selected standard of measure for a physical quantity.
  • Distance
  • Force
  • Unit
  • None of the above
Answer: C
5.One Newton is equal to _____________
  • 105 dynes
  • Kg-m/s2
  • Both
  • None of the above
Answer: C
6.If we have a pressure drop in a pipe of 16 psi, then it is equal _____ kPa.
  • 101
  • 110
  • 111
  • 121
Answer: B
7.The viscosity of the liquid __________ with the temperature increase.
  • Decreases
  • Increases
  • remains constant
  • No relation
Answer: A
8.____________ is characterized by smooth streamlines and highly ordered motion.
  • Laminar flow
  • Turbulent flow
  • Hydrodynamic glow
  • None of the above
Answer: A
9.The average velocity in fully developed laminar pipe flow is _____of the maximum velocity.
  • Half
  • One-half
  • One- third
  • One- fourth
Answer: B
10.Conversion of flow rate 2000 l/s to m3/s is _______
  • 0.2
  • 2
  • 20
  • 200
Answer: B
11.Density has base units of ________________
Answer: ML3
12.A ______________ is a substance which undergoes continuous deformation when subjected to shear force.
Answer: Fluid
13.Reynolds number can be expressed as _________________
Answer: Re = ƥVL/
14.An in viscid flow is the flow of an ideal fluid that is assumed to have no ___________________.
Answer: Viscosity
15.The SI unit of the pressure is ________________
Answer: pascal
16.The ideal gas law is given by _________________
Answer: pv = nRT
17.The _________________ consists of a fixed inner cylinder surrounded by a rotating outer cylinder.
Answer: Rotating cylinder viscometer/Coutte
18.Bernoulli’s equation is given by __________________
Answer: P + 1/2 ρV2 + ρgh = constant
19.The Reynolds number for a laminar flow is less than __________________ .
Answer: Less than 2000
20.________________ Viscometer consists of flat horizontal plate and inverted cone.
Answer: CONE AND PLATE VISCOMETER