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A 7.5 cm diameter jet of water strikes a curved plate at its centre with a velocity of 20 m/s

Civil UPSC ESE Exam Solution 2021

UPSC ESE Exam Solution 2021 for Civil Engineering UPSC ESE 2021 GS Paper 1 download exam paper from telegram https://telegram.me/civil_experiences

A 7.5 cm diameter jet of water strikes a curved plate at its centre with a velocity of 20 m/s. The curved plate is moving with a velocity of 8 m/s in the direction of the jet. The jet is deflected through an angle of 65°. By assuming the plate as smooth, what is the angle made by the relative velocity at the outlet of the plate?





ANSWER= [C] 15°

Detailed Solution for Civil Engineering Exam

A 7.5 cm diameter jet of water strikes a curved plate at its centre with a velocity of 20 m/s

Since the jet is deflected by 165°, the relative velocity at the outlet will make an angle of 15° with the direction of plate movement. This is based on the assumption that for shockless exit, relative velocity should be tangential to the plate at the outlet.

A 7.5 cm diameter jet of water strikes a curved plate at its centre with a velocity of 20 m/s | Civil UPSC ESE Exam Solution 2021

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