Bernoulli's Principle — MCQ Practice

Water flows horizontally through a pipe of varying cross-section. At a point where the area is $20,\text{cm}^2$, the water speed is $1,\text{m/s}$ and the pressure is $200,\text{kPa}$. At another point where the area is $10,\text{cm}^2$, what is the pressure? (Density of water = $1000,\text{kg/m}^3$)

A large open tank has a small hole at a depth of $4.9,\text{m}$ below the free surface of water. What is the speed of efflux of water from the hole? (Take $g = 9.8,\text{m/s}^2$)

Which of the following phenomena is NOT explained by Bernoulli's Principle?

Water flows through a horizontal pipe. At a point where the velocity is $3,\text{m/s}$, the pressure is $5 \times 10^4,\text{Pa}$. If the pressure at another point is $4 \times 10^4,\text{Pa}$, what is the velocity at this second point? (Density of water = $1000,\text{kg/m}^3$)

A horizontal pipe carries water. At point A, the diameter is $4,\text{cm}$ and the pressure is $100,\text{kPa}$. At point B, the diameter is $2,\text{cm}$. If the velocity at point A is $0.5,\text{m/s}$, what is the pressure at point B? (Density of water = $1000,\text{kg/m}^3$)

A fluid flows through a vertical pipe. At point 1, the height is $10,\text{m}$, velocity is $2,\text{m/s}$, and pressure is $1.5 \times 10^5,\text{Pa}$. At point 2, the height is $5,\text{m}$ and velocity is $4,\text{m/s}$. What is the pressure at point 2? (Density of fluid = $800,\text{kg/m}^3$, $g = 10,\text{m/s}^2$)

A pitot tube is used to measure the speed of a fluid. If the static pressure is $P_s$ and the stagnation pressure is $P_0$, what is the fluid speed $v$? (Density of fluid = $\rho$)