Fluid Mechanics -Multiple Choice Questions Quiz

Question 1: What is fluid mechanics?

(a) The study of fluids that are not in motion
(b) The study of fluids and their interactions with solid structures
(c) The study of fluids in motion and the forces acting on them
(d) The study of the properties of gases only

Question 2: Which physical quantity measures the resistance of a fluid to flow?

(a) Viscosity
(b) Density
(c) Pressure
(d) Temperature

Question 3: What is the equation for calculating pressure in a fluid at a specific depth?

(a) P = F/A
(b) P = mgh
(c) P = ρgh
(d) P = V/m

Question 4: What is the principle that explains why an object submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid it displaces?

(a) Pascal's principle
(b) Archimedes' principle
(c) Bernoulli's principle
(d) Boyle's law

Question 5: Which principle is used to explain the lift generated by airplane wings?

(a) Pascal's principle
(b) Archimedes' principle
(c) Bernoulli's principle
(d) Boyle's law

Question 6: What is the equation used to calculate the flow rate of a fluid through a pipe?

(a) Flow rate = Pressure difference / Viscosity
(b) Flow rate = Density × Cross-sectional area × Velocity
(c) Flow rate = Pressure / Temperature
(d) Flow rate = Viscosity × Cross-sectional area × Velocity

Question 7: What is the Reynolds number used for in fluid mechanics?

(a) To calculate the flow rate of the fluid
(b) To determine the density of the fluid
(c) To predict the occurrence of turbulence in the flow
(d) To measure the pressure difference in the flow

Question 8: What is the name for the flow pattern that occurs when a fluid passes through a constriction, causing its velocity to increase and pressure to decrease?

(a) Venturi effect
(b) Bernoulli effect
(c) Pascal effect
(d) Archimedes effect

Question 9: What is the term for the study of fluid flow without considering the effects of compressibility?

(a) Incompressible flow
(b) Compressible flow
(c) Turbulent flow
(d) Laminar flow

Question 10: Which principle states that the total energy of a fluid flowing in a closed system remains constant if no work is done on or by the fluid?

(a) Pascal's principle
(b) Archimedes' principle
(c) Bernoulli's principle
(d) Boyle's law

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Answer key:

Question 1: c

Question 2: a

Question 3: c

Question 4: b

Question 5: c

Question 6: d

Question 7: c

Question 8: a

Question 9: a

Question 10: c