## Deep Sangeet Maity is teaching live on Unacademy Plus

BARC & GATE Question series via Concepts Presented by Deep sangeet Maity

About ME Working as a Design engineer at "Cameron Manufacturing India Pvt Limited (A Schlumberger Company)". . Currently working as "GATE content editor and developer" at "Kreatryx" .Qualified GATE "3" times Qualified "Gate 2018 with 99.4 percentile 779(75.26 marks) gate score" in mechanical stream Qualified "Gate 2017 with 98.83 percentile 726(70 marks) gate score" in mechanical stream I also have an 3+ years of experience of teaching Engineering subjects like Engineering mechanies, Thermodynamies, SOM, HMIT Ex-CADD Engineer at "CADD CENTRE". Passed B.E. with honours with 76.71%. I am pursuing my MTech in Thermal I have an 2.5+ years of experience as a CADD Engineer. . Ialso have worked for "CAD ACADEMY" as a Design engineer for 1 year.

Water is supplied to a tank at the rate of 0.02 m'/s, as shown in the figure below. The cross- sectional area of the tank is 1 m2 and the inner diameter of the outlet pipe is 60 mm. At a time when the water level in the tank is increasing at the rate of 5 mm/s, the average velocity (in m/s) of water in the outlet pipe is approximately Water supply Tank water level Outlet pipe (A) 0.005 (B) 0.06 (C) 5.3 (D) 20

For tauk uns A o -) min- So

inide Now 0.02 m3 |sec. i n Dia 6oMm ner)l, nnd e S-mw/ seol-o.oos'm/SX ) = 21

mml secXI o.oosm/sx

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Sol G 4 Laminar Re 03 . 25 Reo C isuesi m 2 Frst calculate Re and check He So, "We will Use -to cal cnlate (Re If =0.03)

Q.1 The Darcy friction factor f for a smooth pipe is given by f 64/Re for laminar flow and by f 0.3/Re025 for turbulent flow, where Re is the Reynolds number based on the diameter. For fully developed flow of a fluid of density 1000 kg/m and dynamic viscosity 0.001 Pa.s through a smooth pipe of diameter 10 mm with a velocity of 1 m/s, determine the Darcy friction factor.