Question # 1

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 resistance offered by a fluid to a solid moving inside it is called:

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Drag force

Surface force

Viscosity

None of these

Bernoulli's equation is based upon law of conservation

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Mass

Momentum

Energy

None of these

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

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Increase the mass of water flowing per second

Avoid wastage of water

Increase the velocity of water flowing out

Increase the volume of water flowing per second

A person standing near the track of a fast moving train has tendency to fall towards it because of

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Vibration due to motion of train

Gravitation force of attraction between person and trains

The high speed of train

Some other effect

A massive object falls through a fluid:

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Faster

Slower

Slowest

None

A body is moving through a viscous medium eventually comes to rest because of:

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Force of gravity

Force of friction

Its weight

Both A and C

The value for systolic blood pressure for a normal healthy person is

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140 torr

80 torr

90 torr

120 torr

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

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

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Zero

Small

Large

None of these

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

The pressure will be low where the speed of the fluid is

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Zero

High

Low

Constant

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

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Increases

Decreases

Remains constant

None of these

The law of conservation of energy gives us

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equation of continuity

Bernoulli's theorem

both of them

none of them

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

Blood vessels can be stretch like rubber, therefore they are

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rigid

hard

very thick

not rigid

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