Hydraulic Machines MCQ with Answers

Hydraulic Machines MCQ with Answers

6) A Pelton wheel is

Answer is:

Tangential flow impulse turbine

Explanation:

In an impulse turbine, the total energy at the inlet of a turbine is only kinetic energy. The pressure of water both at entering and leaving the vanes is atmospheric. It is used for high head of water. A Pelton wheel is a tangential flow impulse turbine.

A Pelton wheel is

7) An impulse turbine is used for

Answer is:

High head of water

8) The gross or total head of the turbine is the ______ of the water levels at the head race and tail race.

Answer is:

Difference

9) The hydraulic efficiency of an impulse turbine is the

Answer is:

Ratio of the work done on the wheel to the energy of the jet

10) The mechanical efficiency of an impulse turbine is

Answer is:

Ratio of the actual work available at the turbine to the energy imparted to the wheel