Question

What is the function of a surge tank?

(a) It causes water hammer

(b) Produces surge in the pipeline

(c) Relieves water hammer

(d) Supplies water at constant pressure

I got this question in an international level competition.

My doubt stems from Water Hammer in Pipes in division Flow Through Pipes of Fluid Mechanics

Answer 1

Correct option is (c) Relieves water hammer

Best explanation: The main purpose of a surge tank is to relieve water hammer pressure in the penstock. It absorbs the changes in the water requirements. After absorbing the water changes, it reduces the water hammer and the negative pressure developed in the pressure stock.