Question

Gross head is defined as______

(a) Difference of flow of object

(b) Difference of flow of air

(c) Difference of flow of water

(d) Difference of water level between the head race and tail race

This question was addressed to me during an online exam.

Query is from Water Hammer in Pipes in portion Flow Through Pipes of Fluid Mechanics

Answer 1

Correct choice is (d) Difference of water level between the head race and tail race

Explanation: Gross head is defined as the difference of water level between the head race (the level in storage) and the tail race. Gross head can be denoted as (H). It plays an important role in determining the power losses in the pipeline.