## 21. Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation?

1. Fluid flow is frictionless & irrotational

2. Fluid flow is steady

3. Fluid flow is uniform & turbulent

4. Fluid is compressible

5. Fluid is incompressible

1. Fluid flow is frictionless & irrotational

2. Fluid flow is steady

3. Fluid flow is uniform & turbulent

4. Fluid is compressible

5. Fluid is incompressible

## 22. For turbulent flow of an incompressible fluid through a pipe, the flow rate Q is proportional to (Δ P)n, where ΔP is the pressure drop. The value of exponent 'n' is

## 23. Sewage sludge is __________ type of non-Newtonion fluid.

## 24. __________ pumps are axial flow pumps.

## 25. Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will __________ the gas discharge pressure.

## 26. The energy loss over a length of pipeline according to Darcy-Weisbach equation for pipe flow is _________ the mean velocity of flow.

## 27. A pitched-blade turbine draws __________ a straight blade turbine.

## 28. Viscosity of a liquid decreases __________ with rise in temperature.

## 29. In isotropic turbulence, the __________ are equal to each other.

## 30. Bernoulli's equation for steady, frictionless, continuous flow states that the __________ at all sections is same.

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