4) Which of the following statement is correct as regard to water wheels ?

Answer is:

All of the above

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5) Braking jet in an impulse turbine is used

Answer is:

To bring the runner to rest in a short time

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.