Kaplan turbine
Generally, the Kaplan turbine works on low pressure heads (H) and high flow rates (Q). This implies that the Specific speed (Ns) on which Kaplan turbine functions is high as Specific speed (Nsp) is directly proportional to Flow (Q) and inversely proportional to Head (H). On the other hand, Francis turbine works on low Specific speeds i.e., high pressure heads.