Question # 1

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

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constant rate

volume rate

flow rate

steady rate

At high altitude the blood oozes out of the nose and ear because

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The blood pressure increase at high altitudes

The percentage of oxygen in the air increase

The atmospheric pressure decrease there

The density of blood decrease at high altitudes

According to slok's law, drag force depends on

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Radius of the spherical body

Terminal velocity of body

Coefficient of viscosity

All of above

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

Internal friction of fluid is called

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Surface tension

Viscosity

Resistance

Cohesive force

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

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 mass of fluid passing through any cross-section per unit time is called

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electric flux

magnetic flux

mass flux

none of them

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

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very high

very low

constant

zero

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

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F_D-mg

Zero

mg-F_D

None of these

Fog droplets are suspended in air when their weight is balanced by:

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Force of gravity

Upward trust due to air

Surface tension

None of these

Which of the following has the greatest coefficient of viscosity?

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water

gasoline

honey

tar

What is another name for laminar flow?

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streamline

unsteady flow

turbulent flow

both (a) and (b)

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

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Independent of h

Proportional to h^1/2

Proportional to h

Proportional to h²

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