# Fluid Mechanics MCQs with Answers

The property of a fluid that resists its flow is called:

a) Viscosity

b) Density

c) Pressure

d) Surface tension

**Answer: ** a) Viscosity

The pressure exerted by a fluid at rest increases with:

a) Depth

b) Surface area

c) Temperature

d) Velocity

**Answer: ** a) Depth

The buoyant force exerted on an object immersed in a fluid is equal to the:

a) Weight of the object

b) Volume of the object

c) Mass of the object

d) Density of the object

**Answer: ** a) Weight of the object

The principle that states that the pressure applied to a fluid is transmitted undiminished to every point of the fluid is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** a) Pascal’s principle

The velocity of a fluid flowing through a pipe is highest at:

a) The widest section of the pipe

b) The narrowest section of the pipe

c) The middle section of the pipe

d) The entrance of the pipe

**Answer: ** b) The narrowest section of the pipe

The resistance of a fluid to flow is inversely proportional to its:

a) Viscosity

b) Density

c) Velocity

d) Surface tension

**Answer: ** c) Velocity

The pressure difference between two points in a fluid is directly proportional to the:

a) Depth between the two points

b) Density of the fluid

c) Acceleration due to gravity

d) Surface area of the container

**Answer: ** a) Depth between the two points

The flow of a fluid in which the velocity and pressure are constant along any line of flow is called:

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** c) Streamline flow

The equation that relates the pressure, density, and height in a fluid is known as:

a) Bernoulli’s equation

b) Archimedes’ principle

c) Pascal’s principle

d) Boyle’s law

**Answer: ** a) Bernoulli’s equation

The force per unit area exerted on a surface by a fluid is called:

a) Pressure

b) Velocity

c) Density

d) Viscosity

**Answer: ** a) Pressure

The principle that explains why an object immersed in a fluid experiences an upward buoyant force is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** b) Archimedes’ principle

The upward force experienced by an object submerged in a fluid is equal to the weight of the fluid displaced by the object. This statement is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** b) Archimedes’ principle

The flow of a fluid in which the velocity and pressure vary randomly is called:

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** b) Turbulent flow

The property of a fluid that determines its resistance to shear or flow is called:

a) Viscosity

b) Density

c) Pressure

d) Surface tension

**Answer: ** a) Viscosity

The pressure in a fluid decreases with:

a) Depth

b) Surface area

c) Temperature

d) Velocity

**Answer: ** a) Depth

The buoyant force experienced by an object immersed in a fluid depends on the:

a) Mass of the object

b) Volume of the object

c) Density of the object

d) Density of the fluid

**Answer: ** b) Volume of the object

The principle that states that the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** b) Archimedes’ principle

The velocity of a fluid flowing through a pipe is lowest at:

a) The widest section of the pipe

b) The narrowest section of the pipe

c) The middle section of the pipe

d) The exit of the pipe

**Answer: ** b) The narrowest section of the pipe

The resistance of a fluid to flow is directly proportional to its:

a) Viscosity

b) Density

c) Velocity

d) Surface tension

**Answer: ** a) Viscosity

The pressure in a fluid depends on:

a) Depth, density, and acceleration due to gravity

b) Surface area, velocity, and temperature

c) Volume, mass, and viscosity

d) Force, velocity, and surface tension

**Answer: ** a) Depth, density, and acceleration due to gravity

The flow of a fluid in which adjacent layers slide past each other is called:

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** a) Laminar flow

The equation that relates the pressure, density, and height in a fluid at rest is known as:

a) Bernoulli’s equation

b) Archimedes’ principle

c) Pascal’s principle

d) Boyle’s law

**Answer: ** c) Pascal’s principle

The force per unit area exerted on a surface by a fluid is transmitted undiminished in all directions. This statement is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** a) Pascal’s principle

The flow of a fluid in which the velocity and pressure are constant along any line of flow is known as:

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** c) Streamline flow

The property of a fluid that determines its ability to resist changes in shape or volume is called:

a) Viscosity

b) Density

c) Pressure

d) Surface tension

**Answer: ** a) Viscosity

The pressure in a fluid increases with:

a) Depth

b) Surface area

c) Temperature

d) Velocity

**Answer: ** a) Depth

The buoyant force experienced by an object immersed in a fluid depends on the:

a) Weight of the object

b) Volume of the object

c) Mass of the object

d) Density of the object

**Answer: ** b) Volume of the object

The principle that explains why an object immersed in a fluid experiences an upward buoyant force is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** b) Archimedes’ principle

The equation that relates the pressure, velocity, and height in a flowing fluid is known as:

a) Bernoulli’s equation

b) Archimedes’ principle

c) Pascal’s principle

d) Boyle’s law

**Answer: ** a) Bernoulli’s equation

The force per unit area exerted on a surface by a fluid is called:

a) Pressure

b) Velocity

c) Density

d) Viscosity

**Answer: ** a) Pressure

The principle that explains the upward force experienced by an object submerged in a fluid is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** b) Archimedes’ principle

The flow of a fluid in which adjacent layers move in parallel lines is called:

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** a) Laminar flow

The property of a fluid that determines its resistance to shear or flow is called:

a) Viscosity

b) Density

c) Pressure

d) Surface tension

**Answer: ** a) Viscosity

The pressure in a fluid decreases with:

a) Depth

b) Surface area

c) Temperature

d) Velocity

**Answer: ** a) Depth

The buoyant force experienced by an object immersed in a fluid is equal to the:

a) Weight of the object

b) Volume of the object

c) Mass of the object

d) Density of the object

**Answer: ** a) Weight of the object

The principle that states that the pressure applied to a fluid is transmitted undiminished to every point of the fluid is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** a) Pascal’s principle

The velocity of a fluid flowing through a pipe is highest at:

a) The widest section of the pipe

b) The narrowest section of the pipe

c) The middle section of the pipe

d) The entrance of the pipe

**Answer: ** b) The narrowest section of the pipe

The resistance of a fluid to flow is inversely proportional to its:

a) Viscosity

b) Density

c) Velocity

d) Surface tension

**Answer: ** c) Velocity

The pressure difference between two points in a fluid is directly proportional to the:

a) Depth between the two points

b) Density of the fluid

c) Acceleration due to gravity

d) Surface area of the container

**Answer: ** a) Depth between the two points

The flow of a fluid in which the velocity and pressure are constant along any line of flow is called:

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** c) Streamline flow

The equation that relates the pressure, density, and height in a fluid is known as:

a) Bernoulli’s equation

b) Archimedes’ principle

c) Pascal’s principle

d) Boyle’s law

**Answer: ** a) Bernoulli’s equation

The force per unit area exerted on a surface by a fluid is called:

a) Pressure

b) Velocity

c) Density

d) Viscosity

**Answer: ** a) Pressure

The principle that explains why an object immersed in a fluid experiences an upward buoyant force is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** b) Archimedes’ principle

The principle that states that the pressure applied to a fluid is transmitted undiminished to every point of the fluid is known as:

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** a) Pascal’s principle

The velocity of a fluid flowing through a pipe is highest at:

a) The widest section of the pipe

b) The narrowest section of the pipe

c) The middle section of the pipe

d) The entrance of the pipe

**Answer: ** b) The narrowest section of the pipe

The resistance of a fluid to flow is inversely proportional to its:

a) Viscosity

b) Density

c) Velocity

d) Surface tension

**Answer: ** c) Velocity

The pressure difference between two points in a fluid is directly proportional to the:

a) Depth between the two points

b) Density of the fluid

c) Acceleration due to gravity

d) Surface area of the container

**Answer: ** a) Depth between the two points

The flow of a fluid in which the velocity and pressure are constant along any line of flow is called:

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** c) Streamline flow

The equation that relates the pressure, density, and height in a fluid at rest is known as:

a) Bernoulli’s equation

b) Archimedes’ principle

c) Pascal’s principle

d) Boyle’s law

**Answer: ** c) Pascal’s principle

a) Pressure

b) Velocity

c) Density

d) Viscosity

**Answer: ** a) Pressure

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** b) Archimedes’ principle

The flow of a fluid in which the velocity and pressure vary randomly is called:

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** b) Turbulent flow

The property of a fluid that determines its resistance to shear or flow is called:

a) Viscosity

b) Density

c) Pressure

d) Surface tension

**Answer: ** a) Viscosity

The pressure in a fluid decreases with:

a) Depth

b) Surface area

c) Temperature

d) Velocity

**Answer: ** a) Depth

The buoyant force experienced by an object immersed in a fluid is equal to the:

a) Weight of the object

b) Volume of the object

c) Mass of the object

d) Density of the object

**Answer: ** a) Weight of the object

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** a) Pascal’s principle

a) The widest section of the pipe

b) The narrowest section of the pipe

c) The middle section of the pipe

d) The entrance of the pipe

**Answer: ** b) The narrowest section of the pipe

a) Viscosity

b) Density

c) Velocity

d) Surface tension

**Answer: ** c) Velocity

a) Depth between the two points

b) Density of the fluid

c) Acceleration due to gravity

d) Surface area of the container

**Answer: ** a) Depth between the two points

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** c) Streamline flow

The equation that relates the pressure, density, and height in a fluid is known as:

a) Bernoulli’s equation

b) Archimedes’ principle

c) Pascal’s principle

d) Boyle’s law

**Answer: ** a) Bernoulli’s equation

a) Pressure

b) Velocity

c) Density

d) Viscosity

**Answer: ** a) Pressure

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** b) Archimedes’ principle

a) Pascal’s principle

b) Archimedes’ principle

c) Bernoulli’s principle

d) Newton’s principle

**Answer: ** a) Pascal’s principle

a) The widest section of the pipe

b) The narrowest section of the pipe

c) The middle section of the pipe

d) The entrance of the pipe

**Answer: ** b) The narrowest section of the pipe

a) Viscosity

b) Density

c) Velocity

d) Surface tension

**Answer: ** c) Velocity

a) Depth between the two points

b) Density of the fluid

c) Acceleration due to gravity

d) Surface area of the container

**Answer: ** a) Depth between the two points

a) Laminar flow

b) Turbulent flow

c) Streamline flow

d) Irrotational flow

**Answer: ** c) Streamline flow

a) Bernoulli’s equation

b) Archimedes’ principle

c) Pascal’s principle

d) Boyle’s law

**Answer: ** a) Bernoulli’s equation

a) Pressure

b) Velocity

c) Density

d) Viscosity

**Answer: ** a) Pressure