Question # 1

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Choose an answer

water contains hydrogen atoms, air does not

water molecules are smaller than molecules in the air

surface tension of the water prevents it from

The density of blood is nearly equal to that of

Choose an answer

mercury

sodium

water

honey

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

Choose an answer

Quadratic equation

Equation of discontinuity

Equation of continuity

None of the above

The velocity of falling raindrops attains limited value because of

Choose an answer

Up thrust of air

Air currents of the earth atmosphere

Surface tension effect

Viscous force exerted by air

N s m^-2is unit of:

Choose an answer

Drag force

Pressure

Surface tension

Coefficient of viscosity

Deep water almost runs still when surface water flow in rivers. What does it explains

Choose an answer

Magnus effect

Equation of continuity

Surface energy

Bernoulli's equation

The maximum drag force on a falling sphere is 9.8 N, it weight is

Choose an answer

1 N

9.8 N

4.9 N

Cannot be calculated

What are the SI base units of the coefficient of viscosity

Choose an answer

Kg m s^-2

kgm² s^-2

Kg m s^-1

kg m^-1s^-1

The velocity gained by the fluid in falling through the distance (h_{1 - h}_{2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the}

Choose an answer

orifices

efflux

fluid

none of them

According to Stoke's law, drag force depends on

Choose an answer

Initial velocity

Final velocity

Terminal velocity

Instantaneous velocity

With increase of temperature, the viscosity of liquid and gases

Choose an answer

Increases for both

Decreases for both

Increases for liquids and decreases for gases

Decreases for liquids and increases for gases

When a water droplet falls through air, the net force on it is

Choose an answer

Net force = drag force - weight

Net force = weight - drag force

Net force = drag force + weight

Net force = weight + drag force

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm², the fluid pressure on the piston is, in N/cm²

Choose an answer

20

200

2000

20,000

The application of Bernoulli's equation is

Choose an answer

Torricelli's theorem

Venture relation

Binomial theorem

Both a and b

In case of streamed lined flow of liquid, the loss of energy is

Choose an answer

Maximum

Minimum

Infinite

equal to what is in turbulent flow

Bernoulli's equation is based upon law of conversation of

Choose an answer

mass

momentum

Energy

None

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