Hydraulic Machines MCQ with answer and solution

Concept

Application range of the Pelton turbine

Step-by-step solution

1. Pelton wheel is an impulse turbine with a low specific speed. 2. It works under heads above about 250 m (up to 1800 m) with small discharges.

Explanation

Pelton turbines are best for high head and low flow. Francis turbines suit medium head and medium discharge, while Kaplan turbines are used for low head and high discharge.

Shortcut

Pelton: high head, low Q. Francis: medium. Kaplan: low head, high Q.

Common mistake

Mixing up the Pelton and Kaplan ranges.