Question # 1

Blood vessels can be stretch like rubber, therefore they are

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rigid

hard

very thick

not rigid

Matter is made up of very tiny particles called

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Atoms

Molecules

Ions

None of these

At high speed, fluid friction _____ and fuel consumption ___,:

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Increases, decreases

Increases, increases

Decreases, increases

None of these

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 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

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

Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?

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potential energy

pressure energy

strain energy

(a) and (b) only

0.10 cm can be written as:

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1.0 x 10^-2m

1.0 x 10^-3cm

1.0 x 10^-4cm

1. x 10^-4m

Which of the following is a characteristic of an ideal fluid?

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it is non-viscous

it is incompressible

it's motion is steady

all of the above

During the steady flow, different streamlines

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cannot across each other

can across each other

either of them

neither of them

A device used to measure the speed of liquid flow is known as

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barometer

speedometer

sphygmomanometer

venture-meter

Bernoulli's equation is based upon law of conversation

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Mass

Momentum

Energy

None of these

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 value for systolic blood pressure for a normal healthy person is

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140 torr

80 torr

90 torr

120 torr

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

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R

R²

1/R

(1/R)²

Bernoulli's equation is applicable for

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turbulent flow

streamline flow

both (a) and (b)

all kinds of flows

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ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers

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