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Mechanical Engineering - Hydraulic Machines

Exercise : Hydraulic Machines - Section 1
11.
The speed of a turbine runner is
directly proportional to H1/2
inversely proportional to H1/2
directly proportional to H3/2
inversely proportional to H3/2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
A ship with jet propulsion draws water through inlet orifices at right angles to the direction of its motion. The propelling force of the jet is (where a = Area of the jet, Vr = Relative velocity of the jet and ship = V + v, v = Velocity of the ship, and V = Velocity of the jet issuing from the ship)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Discharge of a centrifugal pump is (where N = Speed of the pump impeller)
directly proportional to N
inversely proportional to N
directly proportional to N2
inversely proportional to N2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
In a reaction turbine, the draft tube is used
to run the turbine full
to prevent air to enter the turbine
to increase the head of water by an amount equal to the height of the runner outlet above the tail race
to transport water to downstream
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
The power produced by the reaction turbine is __________ to the head of water.
directly proportional
inversely proportional
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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