- 1. Fluid mechanics is the branch of physics that deals with the study of fluids, including liquids and gases, and the forces acting on them. It encompasses a wide range of phenomena, from the behavior of simple fluids in equilibrium to the complex dynamics of fluid flow. Fluid mechanics plays a crucial role in various engineering disciplines, such as aerospace, civil, mechanical, and chemical engineering. Understanding the principles of fluid mechanics is essential for designing efficient systems like aircraft wings, pipelines, and pumps. Key concepts in fluid mechanics include viscosity, turbulence, pressure, and buoyancy, all of which influence the behavior of fluids in motion. By studying fluid mechanics, engineers can optimize designs, predict performance, and solve practical problems related to fluid flow.
What is the SI unit of pressure?
A) Watt
B) Pascal
C) Newton
D) Joule
- 2. What law states that the pressure of a fluid at rest is the same in all directions?
A) Archimedes' Principle
B) Boyle's Law
C) Pascal's Law
D) Bernoulli's Principle
- 3. Which fluid flow is characterized by smooth, orderly layers of fluid moving parallel to each other?
A) Transient flow
B) Turbulent flow
C) Steady flow
D) Laminar flow
- 4. Which equation represents the relationship among pressure, volume, and temperature of a gas?
A) Hooke's Law
B) Stokes' Law
C) Ideal Gas Law
D) Charles' Law
- 5. What is the resistance of a fluid to flow?
A) Buoyancy
B) Pressure
C) Viscosity
D) Density
- 6. Which of the following is a dimensionless quantity measuring the ratio of inertial forces to viscous forces?
A) Mach number
B) Weber number
C) Froude number
D) Reynolds number
- 7. What is the principle that states the total energy of an incompressible fluid remains constant along a streamline?
A) Pascal's Law
B) Boyle's Law
C) Bernoulli's Principle
D) Archimedes' Principle
- 8. Which term describes the force per unit area exerted by a fluid against a surface?
A) Viscosity
B) Pressure
C) Tension
D) Buoyancy
- 9. In a fluid at rest, the pressure decreases with increasing height. This is known as:
A) Torricelli's Law
B) Hydrostatic pressure
C) Pascal's Law
D) Archimedes' Principle
- 10. Which equation expresses the relationship between the shear stress and the velocity gradient of a fluid?
A) Ohm's Law
B) Newton's Law of Viscosity
C) Stokes' Law
D) Hooke's Law
- 11. The ability of a fluid to exert an upward force on an object submerged in it is called:
A) Inertia
B) Viscosity
C) Hydrodynamics
D) Buoyancy
- 12. Which term refers to the rate of flow of fluid per unit area?
A) Velocity
B) Pressure
C) Viscosity
D) Buoyancy
- 13. What principle states that a body immersed in a fluid experiences an upward force equal to the weight of the fluid it displaces?
A) Pascal's Law
B) Bernoulli's Principle
C) Archimedes' Principle
D) Boyle's Law
- 14. Which term describes the measure of mass per unit volume of a substance?
A) Pressure
B) Buoyancy
C) Viscosity
D) Density
- 15. Which parameter remains constant in Bernoulli's principle along a streamline?
A) Velocity
B) Total Energy
C) Volume
D) Pressure
- 16. What is the term for the force that acts on a body moving through a fluid in the direction opposite to its motion?
A) Lift Force
B) Drag Force
C) Resistance Force
D) Tension Force
- 17. The branch of science that deals with the behavior of fluids in motion and at rest is called?
A) Mechanics
B) Optics
C) Fluid Mechanics
D) Thermodynamics
- 18. The maximum height that a liquid rises in a small-diameter tube inserted into it is determined by?
A) Surface Tension
B) Density
C) Buoyancy
D) Pressure
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