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ESE 90 DAYS PLAN_Fluid Dynamics and Flow Measurements
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Question 1
A circular pipe of radius R carries a laminar flow of a fluid. The average velocity is indicated as the local velocity at what radial distance, measured from the centre?
Question 2
A pipeline of 5cm diameter is reduced abruptly to 3.5cm diameter at a section due to contraction of pipe. The loss of head estimated is 0.7m & head loss coefficient is 0.5. What is the mean velocity(m/s) in reduced pipe section? (Take g=10m/s2)
Question 3
Find the ratio 
Question 4
Two reservoirs with head differences of 30 m are connected with a pipe of 0.8 m diameter. The pipe has two sharp bends with loss coefficient 0.8 & 1.2 respectively. If length of pipe is 1200 m & friction factor is 0.03, then discharge in pipe accounting all minor & major losses will be - Take loss coefficient at entry & exit as 0.5 & 1 respectively.
Question 5
A jet of water 100 mm in diameter having velocity of 25 m/s strikes a series of the flat plates arranged around the periphery of a wheel such that each plate appears successively before the jet. If the plates are moving at a velocity of 10 m/s, the force exerted by the jet on the plate is ______ kN.
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Apr 26ESE & GATE CE
