GATE CE 2014 Set 2 — Question 51
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Water Resources Engineering → Fluid Kinematics & Dynamics → Impulse-Momentum Principle
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Question
A horizontal nozzle of diameter discharges a steady jet of water into the atmosphere at a rate of . The diameter of inlet to the nozzle is . The jet impinges normal to a flat stationary plate held close to the nozzle end. Neglecting air friction and considering the density of water as , the force exerted by the jet (in N) on the plate is _________
Correct answer
318 to 319
Solution
The force exerted by a jet on a stationary flat plate held normal to it is given by:Where:
is the velocity of the jet at the nozzle exit.Velocity
Now, calculate the force:The force exerted by the jet on the plate is approximately .
is the velocity of the jet at the nozzle exit.Velocity
Now, calculate the force:The force exerted by the jet on the plate is approximately .
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