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Q9. A jet of fresh water from an orifice plate strikes a series of flat vanes mounted on a rotor as shown in Fig Q9.

The orifice plate has a diameter of 15 mm and operates under a head of 2 m. It has a coefficient of velocity 0.97 and a coefficient of contraction of 0.64.

The point of impact is at a horizontal distance of 200 mm from the orifice and gives an effective radius of 180 mm from the point of rotation.

The vanes rotate at a speed of 200 rev/min.

Calculate EACH of the following:

(a) The actual velocity of the jet;(2)

(b) The angle between the jet and the vane at the point of contact;(6)

(c) The force acting on the vane;(6)

(d) The power developed by the rotor at the instant shown in Fig Q9.(2)