Question # 1

When the speed of a body in a fluid increases then the drag force

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decreases

becomes zero

increases

non of them

Above a certain velocity of a fluid is called

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turbulent flow

steady flow

either of them

both of them

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

In case of streamed lined flow of liquid, the loss of energy is

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Maximum

Minimum

Infinite

equal to what is in turbulent flow

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

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Is smaller than

Is greater than

Becomes equal to

None of these

Blood pressure is measured by the instrument

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stethoscope

sphygmomanometer

barometer

none of them

Surface tension of water is reduced by adding

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Detergents

Camphor

Plastic

Both A and B

The density of water is 10³kg/m³. The water pressure on a submarine is 2.0 x 10⁷N/m². The depth of the submarine below the surface of the water, in maters, is approximately

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200 m

11000 m

2000 m

8000 m

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

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50 m/s

20 m/s

40 cm/s

5 cm/s

Blood pressure is measured in torr. Which of the following units could belong to torr?

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N m^-1

N m^-2

N m

N^-1m^-2

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 SI unit of viscosity is

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kg m^-1s^-1

kg ms^-1

kg m^-1s^-2

kg m^-1s

The velocity gained by the fluid in falling through the distance (h_{1 - h}_{2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the}

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orifices

efflux

fluid

none of them

A flowing liquid possess

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K.E

P.E

Pressure Energy

All

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

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Zero

High

Low

Constant

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

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