Question 1:

Which principle states that a change in pressure at any point in an incompressible fluid is transmitted equally to all parts of the fluid?

Explanation: The correct answer is A) Pascal's principle. Pascal's principle states that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and the walls of its container. It forms the basis for hydraulic systems.

Question 2:

According to Archimedes' principle, an object submerged in a fluid experiences an upward buoyant force that is equal to:

Explanation: The correct answer is D) The weight of the fluid displaced by the object. According to Archimedes' principle, the buoyant force experienced by an object submerged in a fluid is equal to the weight of the fluid displaced by the object. This principle explains why objects float or sink in a fluid.

Question 3:

If the area of the input piston in a hydraulic system is larger than the area of the output piston, what happens to the force exerted by the output piston compared to the force applied to the input piston?

Explanation: The correct answer is A) The force is greater. According to Pascal's principle, the pressure exerted on an incompressible fluid is transmitted equally to all parts of the fluid. Therefore, in a hydraulic system, if the area of the input piston is larger than the area of the output piston, the force exerted by the output piston will be greater than the force applied to the input piston.

Question 4:

What is the relationship between the pressure and depth of a fluid in a static, non-moving fluid?

Explanation: The correct answer is A) The pressure increases with depth. In a static, non-moving fluid, the pressure increases with depth. This is because the weight of the fluid above exerts a greater force on the fluid at lower depths, resulting in higher pressure.

Question 5:

What is the unit of pressure?

Explanation: The correct answer is C) Pascals (Pa). Pressure is measured in Pascals, which is equivalent to 1 Newton per square meter (N/m²). The Pascal is the SI unit of pressure.