Fluid Mechanics 1 Flashcards Questions With Complete
Solutions
___________ are lines drawn in the flow field so that at a given
instant they are tangent to the direction of flow at every point in
the flow field. Correct Answers streamlines
____________ fluids move without friction Correct Answers
inviscid
____________ of a liquid is the partial pressure of the vapor in
contact with the saturated liquid at a given temperature Correct
Answers Vapor pressure
_____________ is caused by acoustic waves propagating and
reflecting in a confined liquid, for example, when a valve is
closed abruptly Correct Answers water hammer
_____________ occurs when vapor pockets form in a liquid
flow because of local reductions in pressure (for example at the
tip of a boat's propeller blades). Correct Answers cavitation
______________ fluids show a decrease in η with time under a
constant applied shear stress; many paints fall under this
category Correct Answers Thixotropic
________________ are the arbitrary names (and magnitudes)
assigned to the primary dimensions adopted as standards for
measurement. Correct Answers units
1 kilogram * 1 m/s^2 Correct Answers Newton
, 32.2 ft*lbm/(lbf*s^2) Correct Answers constant of
proportionality
A ______ is defined as a fixed, identifiable quantity of mass
with the system boundaries separating the system from the
surroundings. Correct Answers system
A _________ flow is one in which the fluid particles move in
smooth layers Correct Answers laminar
A ___________ is an arbitrary volume in space through which
fluid flows. Correct Answers control volume
A ____________ flow is one in which the fluid particles rapidly
mix as they move along due to random three-dimensional
velocity fluctuations Correct Answers turbulent
A ____________ is the trajectory traced out by a moving fluid
particle. Correct Answers pathline
A "fluid" that behaves as a solid until a minimum yield stress,
τy, is exceeded and subsequently exhibits a linear relation
between stress and rate of deformation is referred to as an ideal
or _________ plastic Correct Answers Bingham
A fluid is a substance that deforms continuously under the
application of a _________________ no matter how small it
may be Correct Answers shear stress
Solutions
___________ are lines drawn in the flow field so that at a given
instant they are tangent to the direction of flow at every point in
the flow field. Correct Answers streamlines
____________ fluids move without friction Correct Answers
inviscid
____________ of a liquid is the partial pressure of the vapor in
contact with the saturated liquid at a given temperature Correct
Answers Vapor pressure
_____________ is caused by acoustic waves propagating and
reflecting in a confined liquid, for example, when a valve is
closed abruptly Correct Answers water hammer
_____________ occurs when vapor pockets form in a liquid
flow because of local reductions in pressure (for example at the
tip of a boat's propeller blades). Correct Answers cavitation
______________ fluids show a decrease in η with time under a
constant applied shear stress; many paints fall under this
category Correct Answers Thixotropic
________________ are the arbitrary names (and magnitudes)
assigned to the primary dimensions adopted as standards for
measurement. Correct Answers units
1 kilogram * 1 m/s^2 Correct Answers Newton
, 32.2 ft*lbm/(lbf*s^2) Correct Answers constant of
proportionality
A ______ is defined as a fixed, identifiable quantity of mass
with the system boundaries separating the system from the
surroundings. Correct Answers system
A _________ flow is one in which the fluid particles move in
smooth layers Correct Answers laminar
A ___________ is an arbitrary volume in space through which
fluid flows. Correct Answers control volume
A ____________ flow is one in which the fluid particles rapidly
mix as they move along due to random three-dimensional
velocity fluctuations Correct Answers turbulent
A ____________ is the trajectory traced out by a moving fluid
particle. Correct Answers pathline
A "fluid" that behaves as a solid until a minimum yield stress,
τy, is exceeded and subsequently exhibits a linear relation
between stress and rate of deformation is referred to as an ideal
or _________ plastic Correct Answers Bingham
A fluid is a substance that deforms continuously under the
application of a _________________ no matter how small it
may be Correct Answers shear stress
