Question

A turbine in which the total energy of water available is converted to kinetic energy is called:
1. Axial flow turbine
2. Reaction turbine
3.  Impulse turbine
4. Mixed flow turbine

Answer 1

Correct Answer - Option 3 :  Impulse turbine

Explanation:

Impulse turbine: 

• If the energy available at the inlet of the turbine is only kinetic energy, the turbine so known as impulse turbine.
• The available energy at the inlet is only kinetic energy if the inlet pressure and outlet pressure is the same equal to atmospheric pressure.
• Example: Pelton Turbine

Reaction Turbine: 

• At the inlet of the turbine, the water possesses kinetic energy as well as pressure energy
• Example: Francis Turbine, Kaplan Turbine

Impulse:

Impulse is the sudden change of momentum of an object when the object is acted upon by a force for an interval of time.