#1
Which property of fluids causes them to exert buoyant force?
Surface Tension
Viscosity
Density
Pressure
#2
What is the term for the resistance of a fluid to flow?
Viscosity
Incompressibility
Surface Tension
Adhesion
#3
What is the formula to calculate pressure in a fluid at a certain depth?
P = F/A
P = ρgh
P = mv
P = RT
#4
What is the term for the force per unit area exerted on an object's surface by the weight of the fluid above it?
Density
Pressure
Buoyancy
Viscosity
#5
What is the SI unit of flow rate?
Newton (N)
Pascal (Pa)
Coulomb (C)
Cubic meter per second (m³/s)
#6
What is the term for the pressure exerted by a fluid on the walls of its container?
Gauge pressure
Atmospheric pressure
Hydrostatic pressure
Absolute pressure
#7
What does Pascal's law state?
Pressure increases with depth in a fluid
The pressure of a fluid remains constant in all directions
The volume of a gas is inversely proportional to its pressure
The velocity of a fluid is directly proportional to its pressure gradient
#8
Which equation represents Bernoulli's principle?
F = ma
P = ρgh
P₁ + ½ρv₁² = P₂ + ½ρv₂²
V = IR
#9
What is the coefficient of viscosity?
Force per unit area
Rate of shear strain
Force per unit length
Force per unit velocity gradient
#10
What principle explains why an airplane's wings generate lift?
Bernoulli's principle
Archimedes' principle
Newton's third law
Boyle's law
#11
Which of the following is a unit of viscosity?
Pascal (Pa)
Newton (N)
Pascal-second (Pa·s)
Pascal-meter (Pa·m)
#12
Which of the following statements about laminar flow is true?
It is characterized by irregular and chaotic fluid motion
It occurs at high Reynolds numbers
It has smooth and orderly fluid motion
It is only observed in turbulent flows
#13
In a hydraulic system, if a small force is applied to a small piston, what happens to the force exerted by a larger piston connected to it?
It decreases
It remains the same
It increases
It becomes zero
#14
What is the ideal mechanical advantage of a hydraulic system?
Equal to 1
Depends on the viscosity of the fluid
Greater than 1
Less than 1
#15
Which law states that the total energy of an isolated system remains constant over time?
Law of conservation of energy
Archimedes' principle
Boyle's law
Pascal's law
#16
In a fluid at rest, what is the pressure at a point solely dependent on?
Density of the fluid
Depth of the point
Surface tension of the fluid
Acceleration due to gravity
#17
What phenomenon occurs when a fluid's velocity increases as it passes through a constriction due to conservation of mass?
Bernoulli's effect
Venturi effect
Pascal's principle
Newton's law of cooling
#18
Which principle states that the buoyant force on an object immersed in a fluid is equal to the weight of the fluid displaced by the object?
Archimedes' principle
Bernoulli's principle
Pascal's principle
Charles' law