Question

The following parameters relate to flow in a penstock:

1. Water level in the reservoir

2. Density of water

3. Elasticity of water

4. Roughness of pipe

Pressure rise due to water in a penstock depends upon

• A. 1 and 2
• B. 2 and 3
• C. 2 and 4
• D. 1, 2, 3 and 4

Answer 1

The correct option is D 1, 2, 3 and 4

$\text{Pressure rise due to water in penstock is given by}P=\rho VC.$

As the flow velocity depends on roughness of pipe, reservoir's water level, density of water and modulus of elasticity of water. Pressure rise due to water in penstock is affected by all these parameters.