Question # 1

Viscosity is defined as

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the friction between fluid and its container's walls

the internal friction between two layers of fluid

the resistance to flow a fluid experiences

the extent to which outside factors effect the fluid's flow

Bernoulli's equation is based upon law of conservation

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Mass

Momentum

Energy

None of these

The density of blood is nearly equal to that of

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mercury

sodium

water

honey

The smooth or steady streamline flow is known as

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laminar flow

turbulent flow

both of them

none of them

The internal pressure of the blood is

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less than the external atmospheric pressure

greater than the external atmospheric pressure

equal to the external atmosphericpressure

none of them

The value of viscosity of a fluid is dependent on (at constant temperature)

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the fluid itself

the fluid and its container

anything in contact with the fluid

all of the above

The pressure will change in the pipe, as the fluid moves through that pipe of varying

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cross-section

height

none of them

both of them

A massive object falls through a fluid:

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Faster

Slower

Slowest

None

A body is floating in a liquid. The up thrust on the body is

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Equal to weight of liquid displaced

Zero

Less than the weight of liquid displaced

Weight of body-weight of liquid displaced

Bernoulli's equation is based upon law of conversation of

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mass

momentum

Energy

None

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

According to Stoke's law, drag force depends on

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Initial velocity

Final velocity

Terminal velocity

Instantaneous velocity

The direction of the streamlines is the same as the direction of the

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force

torque

velocity

weight

A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms^-1then velocity at second cross-section is

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5000 cms^-1

500 cms^-1

50 cms^-1

0.5 cm/s

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

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125 J

90 J

160 J

85 J

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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ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers

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