Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 1 (Q.No. 14)
14.
A nozzle discharging water under head H has an outlet area "a" and discharge coefficient cd = 1.0. A vertical plate is acted upon by the fluid force Fj when held across the free jet and by the fluid force Fn when held against the nozzle to stop the flow, the ratio Fj/Fn is
Discussion:
7 comments Page 1 of 1.
Gama said:
5 years ago
Please describe it.
Prerna Sutariya said:
6 years ago
The corret answer is 2.
Jothi.V said:
7 years ago
Fj=pAv2,
Fn=(pg)HA,=PA,
=pgv2./2gxA ie H=v2/2g =pv2A/2,
Fn=Fj/2 .2=Fj/Fn.
Fn=(pg)HA,=PA,
=pgv2./2gxA ie H=v2/2g =pv2A/2,
Fn=Fj/2 .2=Fj/Fn.
(1)
Satya said:
7 years ago
Please explain it briefly.
Saroj said:
9 years ago
Thank you @Yogesh.
Ayon said:
9 years ago
Great @Yogesh. Thanks.
Yogesh more said:
9 years ago
In example, force does not change due to the position of the plate but pressure acting on the plate will change because surface area changes i.e.F/A = P.
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