Fluids Multiple Choice questions PDF

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Question 1 Which of the following statements is NOT TRUE?

(A) As the depth in a liquid increases, the total pressure also increases (B) The pressure in a liquid depends on its density (C) The pressure at a certain depth in a pond will be greater than the pressure at the surface of the pond (D) As the depth in a liquid increases, the total pressure decreases.

Question 2 Which of the following statements is true as applied to the flow of an ideal incompressible fluid?

(A) Where the area of cross-section is small, flow rate is large (B) Where the area of cross-section is small, flow rate is small (C) Where the area of cross-section is small, velocity is small (D) Where the area of cross-section is small, velocity is high.

Question 3 According to Poiseuille’s Law (as applied to the laminar flow of an incompressible viscous fluid)

(A) Flow resistance is proportional to the fourth power of tube radius (B) Rate of flow is inversely proportional to the fourth power of the tube radius (C) A reduction in tube radius by a half decreases flow rate 1/16th of the original value (D) None of the above is true.

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Question 4

When submerged in water an object appears

(A)

Heavier as it experiences a buoyant force

(B)

Lighter as it experiences a buoyant force

(C)

Heavier as it gains in mass

(D)

Lighter as it gains in volume.

Question 5

Where the blood vessel narrows

(A)

Both velocity and pressure would be high

(B)

Both velocity and pressure would be low

(C)

Velocity would be high but pressure would be low

(D)

Velocity would be low but pressure would be high

Question 6

Which of the following principles can best explain the bulging of a

blood vessel in aneurism? (A)

Archimede’s principle

(B)

Pascal’s principle

(C)

Poiseuille’s law

(D)

Pressure loss due to turbulence

Question 7

When a person is standing where will the blood pressure be

lowest? (A)

At the foot

(B)

At the head

(C)

At the level of heart

(D)

At the level of the neck

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Question 8

Surfactants serve to

(A)

Lower the surface tension

(B)

Increase the surface tension

(C)

Keep the surface tension unchanged

(D)

Increase or decrease surface tension depending on the situation

Question 9

Turbulence results in

(A)

Loss in velocity

(B)

Loss in pressure

(C)

Increase in pressure

(D)

Loss in kinetic energy

Question 10 Which of the following statements is incorrect?

(A)

As the altitude increases atmospheric pressure decreases

(B)

As you go deeper into water, you will experience a greater pressure

(C)

As the altitude increases atmospheric pressure increases

(D)

The pressure is defined as the force per unit area

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Answers:!1D,!2D,!3C,!4B,!5C,!6B,!7B,!8A,!9B,!10C! !...