Mechanical Aptitude Fluid Dynamics Principles Questions and Answers 2

Question 1

According to Bernoulli's principle, what happens to the pressure of a fluid as its velocity increases?

Accepted Answer

Pressure decreases

Answer

Pressure increases

Answer

Pressure remains constant

Answer

Pressure fluctuates randomly

Question 2

What does viscosity measure in a fluid?

Accepted Answer

Resistance to flow

Answer

Density

Answer

Temperature

Answer

Compressibility

Question 3

What type of flow is characterized by smooth, parallel layers of fluid with no mixing between them?

Accepted Answer

Laminar flow

Answer

Turbulent flow

Answer

Chaotic flow

Answer

Vortex flow

Question 4

What principle explains why a heavier-than-water steel ship floats?

Accepted Answer

Archimedes' principle

Answer

Bernoulli's principle

Answer

Pascal's principle

Answer

Newton's third law

Question 5

In a venturi tube, where is the fluid velocity the highest?

Accepted Answer

At the narrowest section (throat)

Answer

At the widest section

Answer

At the inlet

Answer

At the outlet

Question 6

What does the Reynolds number help predict about fluid flow?

Accepted Answer

Whether flow is laminar or turbulent

Answer

Fluid temperature

Answer

Fluid density

Answer

Flow direction