Question # 1

Matter is made up of very tiny particles called

Choose an answer

Atoms

Molecules

Ions

None of these

Which of the following has the greatest coefficient of viscosity?

Choose an answer

water

gasoline

honey

tar

Where the streamlines are very far apart from each other, the pressure will be

Choose an answer

low

zero

high

all of them

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Choose an answer

v/A = constant

A/v = constant

Av = constant

None

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 velocity of falling raindrop attains limited value because of

Choose an answer

Up trust of air

Viscous force exerted by air

Surface tension effect

Air currents atmosphere

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

Choose an answer

125 J

90 J

160 J

85 J

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Choose an answer

flatted for all times

inflated for all times

inflated for small times

none of them

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Choose an answer

Decreases

Increases

Remains same

Zero

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Choose an answer

Independent of h

Proportional to h^1/2

Proportional to h

Proportional to h²

The study of fluid in motion basically involves law of conservation of:

Choose an answer

Mass

Energy

Change

Both A and C

Both A and B

At the starting point of the free fall motion of an object, its acceleration will be

Choose an answer

maximum

minimum

zero

none of them

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

Drag force increases if speed of the object moving through the fluid:

Choose an answer

Increases

Decreases

Remains constant

None of these

Above a certain velocity of a fluid is called

Choose an answer

turbulent flow

steady flow

either of them

both of them

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

More Classes

Other Links

Physics ECAT Pre Engineering 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