Question # 1

The smooth or steady streamline flow is known as

Choose an answer

laminar flow

turbulent flow

both of them

none of them

Glycerin has viscosity _____ the viscosity of water:

Choose an answer

More than

Equal to

Less than

None of these

The property of fluids due to which they resist their own flow is called:

Choose an answer

Drag force

Surface tension

Viscosity

None of these

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m³during its steady flow

Choose an answer

1.3 m/s

1.6 m/s

1.9 m/s

2.2 m/s

The value of viscosity of a fluid is dependent on (at constant temperature)

Choose an answer

the fluid itself

the fluid and its container

anything in contact with the fluid

all of the above

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Choose an answer

cross-section

height

none of them

both of them

An object moving through a fluid experiences a retarding force called a

Choose an answer

frictional force

terminal force

opposing force

drag force

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Choose an answer

incompressible

compressible

viscous

non viscous

The electrical forces between the molecules of a liquid are

Choose an answer

Repulsive

Attractive

Both A and B

None

Viscosity of water is ______ that of air but ___ that of plasma.

Choose an answer

More, more

Less, more

Less, less

More, less

Fire fighters have jet attached to the head of their water pipes in order to

Choose an answer

Increase the mass of water flowing per second

Increase the velocity of water flowing out

Increase the volume of water flowing per second

Avoid wastage of water

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Choose an answer

decreases

increases

becomes zero

none of them

During the steady flow, different streamlines

Choose an answer

cannot across each other

can across each other

either of them

neither of them

A device used to measure the speed of liquid flow is known as

Choose an answer

barometer

speedometer

sphygmomanometer

venture-meter

Fluid friction is _____ the friction between two solid surfaces:

Choose an answer

Greater than

Smaller than

Equal to

None of these

Blood has a density

Choose an answer

Equal to water

Greater then water

Lesser then water

None of these

Density of fluid is defined as:

Choose an answer

Its volume to mass ratio

Product of volume and mass

Its mass of volume ratio

None of these

The dimensions of viscosity are:

Choose an answer

M²L^-1T^-2

M^-1L¹T^-1

M^-1L^-1T

ML^-1T^-1

In a normal healthy person the value of diastolic pressure is

Choose an answer

75 - 80 torr

100 torr

120 torr

none of them

Where the streamlines are very close to each other, the pressure will be

Choose an answer

low

zero

high

all of them

More Classes

Other Links

ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer