The pressure increase from the free surface can be calculated with the formula for the weight of the water column divided by the cross sectional area, that is d*g*h, where

d = 1 000 kg/m^3 is water density,

g = 9.8 m/s^2 is gravity and

h = 15 m is the depth.

Then we get 147000 Pa = 147 kPa = 1.47 bar.

#
**7) **Pressure at a depth of 15 m under water surface in a dam is approximately

**Answer is:**

## 150 kPa (g)

**Explanation:**

**Related ISRO Technical Assistant Mechanical Question Paper - 2016 with Answer Key**

**Answer is:**

### elongation

**Explanation:**

Ductility is the property of a material which enables it to draw out into thin wires.

The percent elongation and the reduction in area in tension is often used as empirical measures of ductility.

Ductility of material is indicated by elongation.

**Answer is:**

### W/mK

**Explanation:**

The thermal conductivity of a material is a measure of its ability to conduct heat. It is commonly denoted by k.

Unit of thermal conductivity is W/mK.