Question # 1

Bernoulli's equation is important in the field of

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Electrical circuit

Magnetism

Photoelectric effect

Flow of fluids

In a normal healthy person the value of systolic pressure is

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75 torr

80 torr

120 torr

all of them

With increase of temperature, the viscosity of liquid and gases

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Increases for both

Decreases for both

Increases for liquids and decreases for gases

Decreases for liquids and increases for gases

The fluid is incompressible, if itsdensity is

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zero

constant

very high

very small

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

Bernoulli's equation is based upon law of conversation of

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mass

momentum

Energy

None

The velocity of falling raindrop attains limited value because of

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Up trust of air

Viscous force exerted by air

Surface tension effect

Air currents atmosphere

Above a certain velocity of a fluid is called

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turbulent flow

steady flow

either of them

both of them

The density of blood is nearly equal to that of

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mercury

sodium

water

honey

The equation of continuity is

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A₁A_{2 = V}₁V₂

A_1/_V_{1 =}A_2/V₂

_V_1/A₁₌V_2/A₂

A₁_V_{1 =}A₂V₂

With the increase of temperature viscosity

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Increase

Decrease

Remains same

Doubles

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

Bernoulli's equation is based upon law of conservation

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Mass

Momentum

Energy

None of these

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

Liquids and gasses have

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zero viscosity

non-zero viscosity

very large viscosity

very small viscosity

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

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P

1/2 fv²

pgh

none of them

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics Online Test MCQs With Answers

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