MAE 3314 EXAM QUESTIONS AND ANSWERS
100% VERIFIED
According to the sign convention, mass flowrate out of the control volume is negative
and the mass flowrate in is positive. - ANSWER False
What is the sign convention when the mass of the contents of the control volume is
decreasing - ANSWER Negative
When the flow is steady the assumption can be made that the mass flow in is equal to the
mass flow out. - ANSWER True
The three most common devices used to measure the instantaneous flowrate in pipes
are - ANSWER venturi meter, orifice meter, nozzle meter
Streamwise acceleration is the product of the rate of change of speed with distance
along the streamline, dV/ds, and what else - ANSWER the viscosity
In the derivation of the Bernoulli equation what is assumed - ANSWER steady,
incompressible, and inviscid flow
An airfoil is designed so that the fluid velocity over its upper surface is ___________ than
that along its lower surface - ANSWER more
State the conservation of mechanical energy principle - ANSWER Flow energy remains
constant if fluid flow is incompressible, inviscid and steady
The pressure outside a tornado is ___________ the pressure near the center of the
tornado - ANSWER less than
, The total pressure is equal to the sum of the static pressure, dynamic pressure, and
______________ - ANSWER hydrostatic pressure
If elevation effects are neglected, the stagnation pressure is ___________. - ANSWER
zero
To measure incompressible flow speed, all we need is to measure ___________. -
ANSWER difference in height
The Bernoulli equation is not valid for flows that involve pumps or turbines. - ANSWER
True
The amount of mass in a system is constant - ANSWER False
The Reynolds transport theorem provides the relationship between - ANSWER The time
rate of change of the fluid mass and the control volume
The broad subject of fluid mechanics can be generally divided into - ANSWER fluid
statics, fluid kinematics and fluid kinetics
What is the definition of specific gravity - ANSWER the ratio of the density of a fluid to
the density of water
The gas constant, R, depends on what - ANSWER The molecular mass of the gas
What is the no-slip condition that all fluids satisfy - ANSWER the experimental
observation that the fluid sticks to the solid boundaries
Kinematic viscosity is defined as the ratio of the absolute viscosity to the fluid mass -
ANSWER False
100% VERIFIED
According to the sign convention, mass flowrate out of the control volume is negative
and the mass flowrate in is positive. - ANSWER False
What is the sign convention when the mass of the contents of the control volume is
decreasing - ANSWER Negative
When the flow is steady the assumption can be made that the mass flow in is equal to the
mass flow out. - ANSWER True
The three most common devices used to measure the instantaneous flowrate in pipes
are - ANSWER venturi meter, orifice meter, nozzle meter
Streamwise acceleration is the product of the rate of change of speed with distance
along the streamline, dV/ds, and what else - ANSWER the viscosity
In the derivation of the Bernoulli equation what is assumed - ANSWER steady,
incompressible, and inviscid flow
An airfoil is designed so that the fluid velocity over its upper surface is ___________ than
that along its lower surface - ANSWER more
State the conservation of mechanical energy principle - ANSWER Flow energy remains
constant if fluid flow is incompressible, inviscid and steady
The pressure outside a tornado is ___________ the pressure near the center of the
tornado - ANSWER less than
, The total pressure is equal to the sum of the static pressure, dynamic pressure, and
______________ - ANSWER hydrostatic pressure
If elevation effects are neglected, the stagnation pressure is ___________. - ANSWER
zero
To measure incompressible flow speed, all we need is to measure ___________. -
ANSWER difference in height
The Bernoulli equation is not valid for flows that involve pumps or turbines. - ANSWER
True
The amount of mass in a system is constant - ANSWER False
The Reynolds transport theorem provides the relationship between - ANSWER The time
rate of change of the fluid mass and the control volume
The broad subject of fluid mechanics can be generally divided into - ANSWER fluid
statics, fluid kinematics and fluid kinetics
What is the definition of specific gravity - ANSWER the ratio of the density of a fluid to
the density of water
The gas constant, R, depends on what - ANSWER The molecular mass of the gas
What is the no-slip condition that all fluids satisfy - ANSWER the experimental
observation that the fluid sticks to the solid boundaries
Kinematic viscosity is defined as the ratio of the absolute viscosity to the fluid mass -
ANSWER False
