Exam (elaborations)
Fluid and mechanics MCQS
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MULTIPLE CHOICE QUESTIONS MULTIPLE CHOICE QUESTIONS
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Here Are Quizzes / Multiple-Choice Questions (Mcqs) OnFLUID MECHANICS
Along With Their Correct Answers.
1. Which property of a fluid determines its resistance to shear deformation?
a) Density
b) Viscosity
c) Pressure
d) Surface tension
**Answer: b) Viscosity**
2. What is the relationship between pressure, force, and area according to
Pascal's law?
a) Pressure = Force × Area
b) Force = Pressure × Area
c) Area = Pressure × Force
d) Pressure = Area / Force
**Answer: b) Force = Pressure × Area**
3. The buoyant force on an object submerged in a fluid is equal to the:
a) Volume of the object
, b) Weight of the fluid displaced by the object
c) Mass of the object
d) Surface area of the object
**Answer: b) Weight of the fluid displaced by the object**
4. Bernoulli's principle states that as the speed of a fluid increases, its:
a) Pressure increases
b) Pressure decreases
c) Density increases
d) Temperature decreases
**Answer: b) Pressure decreases**
5. The ideal fluid flow characterized by constant velocity at any point and steady
flow is called:
a) Laminar flow
b) Turbulent flow
c) Viscous flow
d) Incompressible flow
**Answer: a) Laminar flow**
6. The Reynold's number is used to predict the flow regime in a fluid. What does it
compare?
, a) Pressure and temperature
b) Velocity and density
c) Viscous forces and inertial forces
d) Volume and area
**Answer: c) Viscous forces and inertial forces**
7. Which equation describes the relationship between velocity, pressure, and
height in fluid flow?
a) Poiseuille's equation
b) Archimedes' principle
c) Pascal's law
d) Bernoulli's equation
**Answer: d) Bernoulli's equation**
8. The coefficient of viscosity is also known as:
a) Bulk modulus
b) Shear modulus
c) Newtonian constant
d) Dynamic viscosity
**Answer: d) Dynamic viscosity**
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