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**12) **The pressure head loss experienced by fluid flow due to friction in a pipe reduces with

**Answer is:**

## Both (b) and (c)

**Related ISRO Technical Assistant Mechanical Question Paper - 2019 with Answer Key**

**Answer is:**

### Straight line

**Explanation:**

A Newtonian fluid is defined as one with constant viscosity, with zero shear rate at zero shear stress, that is, the shear rate is directly proportional to the shear stress.

**Answer is:**

### Acceleration is proportional to displacement from mean position

**Answer is:**

### Increases with increase in area of body

**Answer is:**