08 mis and the inlet and oullet pressures are 45,000 Nm and 37,000 Nm eeeectivel
ID: 703136 • Letter: 0
Question
08 mis and the inlet and oullet pressures are 45,000 Nm and 37,000 Nm eeeectively. Calculate the frictional head loss in the pipe over the 100 nm ength ?h) ,2325 m C4732 m D 11239 m E912, m 9. A 100 mm diameter pipe caries water at a velociky of 2.1 m/s The pipe friction tactor is 0,00045, If the pipe is 1200 m long calcuale the total head los in is ppe (measured in m) A 5482 m B2265m D3.275 m E 4.855p C8431m 10. A manufacturer pumps insulating oil from a refinery into a storage vesset f the oil has a dynamic viscosity of 0.0316kgms, a RD 0 866, and a mean velocity of o.9 m's determine the frictional head loss (metres) per metre of pipe if the pipe diameter is 50mm length A 0.1297 m/m C00429 E 1233 mm 11 Water fows through a 75 mm ppe with ? velocity of 4 m/s. Determine the head loss (m) f the pipe is 27 m long and the pipe friction factor is 0.004 1 Law of thermodynamics: closed and open systoms 12. 1 kg of air can be expanded between two states as it does 30 kJ of work on thesnordings and receives 26 kJ of heat what is the change of internal energy? 26-30s AU 3 A turbine has inlet and outet pipes at the same level 0.5 kgis of steam is supplied at 18 m/s with a specfic enthalpy of 500 k.Jkg. Steam leaves the turbine at a velocity 25 m/s with an enthalpy of 250 kkg. Calculate the work of the turbine in kw if the beat input is 300 kw 424.9kW) B 125 3 kw c300 1 kW D100 7kw E200 8 kW ovd 1. A system receives 36 MJ of heat and produces a force of 0 35 MN acting S, a distance of 4.5 m, calculate the net change in intermal energy? M2O.5jExplanation / Answer
Ans 9
Dia of pipe D = 100 mm x 1m/1000mm = 100*10^-3 m
Velocity V = 2.1 m/s
Friction factor f = 0.00045
Length of pipe L = 1200 m
Head loss hf =?
From the Darcy Weisbach equation
hf = 4fLV2 / (D x 2g)
= (4*0.00045*1200m*2.1*2.1m2/s2 )/ (100*10^-3m *2*9.81m/s2)
= 4.855 m
Option E is the correct answer
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