WorksheetsFluid Mechanics Placement Session Quiz
Total questions: 20
Worksheet time: 13mins
What is fluid mechanics?
Study of fluid behaviour at rest
Study of fluid behaviour in motion
Study of fluid behaviour at rest and in motion
Study of fluid behaviour at rest and in motion
If a person studies about a fluid which is at rest, what will you call his domain of study?
Fluid Kinematics
Fluid Dynamics
Fluid Mechanics
Fluid Statics
When is a fluid called turbulent?
High viscosity of fluid
Reynolds number is greater than 4000
Reynolds number is less than 2000
The density of the fluid is low
One litre of water occupies a volume of
100 cm3
250 cm3
500 cm3
1000 cm3
The kinematic viscosity is the
ratio of absolute viscosity to the density of the liquid
ratio of density of the liquid to the absolute viscosity
product of absolute viscosity and density of the liquid
product of absolute viscosity and mass of the liquid
When a tube of smaller diameter is dipped in water, the water rises in the tube due to viscosity of water.
True
False
According to equation of continuity,
w1a1 = w2a2
w1v1 = w2v2
a1v1 = a2v2
a1/v1 = a2/v2
In order to measure the flow with a venturimeter, it is installed in
horizontal line
inclined line with flow upwards
inclined line with flow downwards
any direction and in any location
In a venturimeter, the velocity of liquid at throat is __________ than at inlet.
higher
lower
The pressure less than atmospheric pressure is known as
suction pressure
vacuum pressure
negative gauge pressure
all of these
An ideal fluid is frictionless and incompressible.
Correct
Incorrect
A flow in which the volume of a fluid and its density does not change during the flow is called __________ flow.
incompressible
compressible
The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced
equal to
less than
more than
The weight per unit volume of a liquid at a standard temperature and pressure is called
specific weight
mass density
specific gravity
none of these
The Bernoulli's equation is based on the assumption that
there is no loss of energy of the liquid flowing
the velocity of flow is uniform across any cross-section of the pipe
no force except gravity acts on the fluid
all of the above
A flow in which __________ force is dominating over the viscosity is called turbulent flow.
elastic
surface tension
viscous
inertia
Reynold's number is the ratio of inertia force to
pressure force
elastic force
gravity force
viscous force
The unit of dynamic viscosity in S.I. units is
N-m/s2
N-s/m2
poise
stoke
The flow of water through the hole in the bottom of a wash basin is an example of
steady flow
uniform flow
Rotational flow
Irrotational flow
The viscosity of water is __________ than that of mercury.
higher
lower
