Assuming that Bernoullis equation applied to the pipe flow s

Assuming that Bernoulli\'s equation applied to the pipe flow shown in the figure, which of the following statement is most correct? Pressure head increases from 1 to 2 Pressure head decreases from 1 to 2 Pressure head remains unchanged from 1 to 2 Bernoulli\'s equation does not include pressure head. Distinguish between ideal flow and real flow. Explain why the Reynolds transport theorem is useful in Fluid Mechanics. How does the Reynolds number of a 1/15 scale model relate to the Reynolds number of a dimensionally similar They are both equal The Reynolds number of the model is 15 times lower The Reynolds number of the prototype is 15 times lower The Reynolds number of the model is a function of the velocity ratio. For a body partially submerged in a fluid and at equilibrium, which of the following is a true statement? The weight of the body is equal to the weight of the volume of fluid displaced The weight of the body is less than the weight of the volume of the displaced The weight of the body is greater than the weight of the volume of the fluid displaced The specific gravity of the body is greater than the specific gravity of the fluid. What are minor losses? Decreases in pressure due to friction in fully developed turbulent flow through pipes of constant area. Decreases in pressure due to friction in valves, tees, and elbows, and other frictional effects Decreases in pressure due to friction that can usually be ignored Decreases in pressure due to friction in fully developed turbulent flow in nonconstant area pipes eh of the following can be directly determined by a pitot tube? Velocity of a flowing fluid Stagnation pressure Discharge rate Total pressure

Solution

1) Option: b - Bernoulli\'s equation states that \"For incompressible, inviscid flow, Static Pressure + Dynamic Pressure + Hydrostatic Pressure = constant. Hence as diameter gets reduced kinetic head increases which will reduce pressure head

2)

1. It has zero viscosity

1. Viscous in nature

2. Incompressible

2. Compressible

3. No resistance is encountered as the fluid moves

3. Certain amount of resistance is always offered by these fluids as they move

3) This theorem is used to compute derivatives of integrated quantities. This is widely used for conservation of mass, linear momentum and angular momentum.

4) Option: b - Reynold number is 15 times lower as model will have 15 times lesser diameter and Re is directly propotional to Diameter

5) Option: a - Due to buoyancy force exerted by water same amount of water will be displaced.

6) Option: b - Minor losses includes losses due to eddy\'s, elbows, tees etc

7) Option: b - It measures stagnation presuure which is later on used for calculatinng the flow velocity. Its widely used to measure air speed of aircraft

Ideal Flow	Real flow
1. It has zero viscosity	1. Viscous in nature
2. Incompressible	2. Compressible
3. No resistance is encountered as the fluid moves	3. Certain amount of resistance is always offered by these fluids as they move
4. No boundary layer formation	4. Boundary layer will get form near boundries.