Question # 1

Liquids and gasses have

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zero viscosity

non-zero viscosity

very large viscosity

very small viscosity

The law of conservation of energy gives us

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equation of continuity

Bernoulli's theorem

both of them

none of them

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

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low

zero

high

all of them

When a fluid is in motion, its flow can be considered as

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turbulent

streamline

either or them

neither of them

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

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20

200

2000

20,000

How much force is required to slide one layer of the liquid over the other layer is measured by

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friction

density

viscosity

resistivity

The smooth or steady stream-line flow is know as

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Laminar flow

Turbulent flow

Both a and b

None of the above

The term Brownian movement refers to

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irregular motions of small particles suspended in a fluid

convection currents in a liquid or gas

convection currents in a gas but not in a liquid

the stretching of a body beyond its elastic limit

In deriving the Bernoulli's equation, we assume that the fluid is

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incompressible

no viscous

flows in a steady manner

all of them

The electrical forces between the molecules of a liquid are

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Repulsive

Attractive

Both A and B

None

Which of the following options correctly states the equation of continuity for an ideal fluid?

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A₁A₂= V₁V₂

A₁/A₂= V₂/V₁

A₁/A₂= V₁/V₂

none of the above

In a normal healthy person the value of systolic pressure is

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75 torr

80 torr

120 torr

all of them

The SI unit of viscosity is

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kg m^-1s^-1

kg ms^-1

kg m^-1s^-2

kg m^-1s

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

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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 body passing a viscous medium affected by:

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One force only

Two forces only

Four forces

None of these

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

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Mass

Energy

Change

Both A and C

Both A and B

Substances that do not flow easily have

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large coefficient of viscosity

small coefficient of viscosity

either of them

none of them

In a normal healthy person the value of diastolic pressure is

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75 - 80 torr

100 torr

120 torr

none of them

The fluid is incompressible, if itsdensity is

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zero

constant

very high

very small

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

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maximum

minimum

zero

none of them

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