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Engineering · Mechanical Engineering
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A horizontal pipe has an abrupt expansion (Figure Q3b) from D, 8 cm o D2-16 cm. The water velocity in the smaller section is 10 m/s and the ow is turbulent. The pressure in the smaller section is Pt410 kPa Taking the kinetic energy correction factor to be 1.06 at both the inlet and the outlet, determine the downstream pressure P2, and estimate the error that would have occurred if Bernoullis equation had been used Water D2 16 cnm 10 m/s 410 kPa Rajah S3b Figure Q3b (12 markah/marks) a) Bezakan di antara daya seret dan daya angkat. Apakah yang menghasilkan mereka? Mengapakah kita biasanya cuba Differentiate drag and lift forces? What causes them? Why do we usualy (5 markah/marks) mengurangkan mereka try to minimize them

KMEM 2213 An onifice (Figure Q4b) with a 4.6-cm-diameter opening is used to measure themass flow rate of water at 15°C (ρ 9991 kg/m and μ 1.138 x 10 kg/m.s) through a horizontal 10-cm-diameter pipe. A mercury manometer is used to measure the pressure difference across the onifice. If the differential height of the manometer is read to be 18 cm, determine the volume flow rate of water through the pipe, the average velocity, and the head loss caused by the orifice meter 1O cm 4.6 em 18 cm Rajah S4b I Figure Q4b

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