Question

The water is flowing through a tapering pipe having diameters 300 mm and 150 mm at sections 1 and 2 respectively.The discharge through the pipe is 40 litres/sec .The section 1 is 10 m above datum and section 2 is 6 m above datum.Find the intensity of pressure at section 2 if at section 1 is 400 kN/m^2
4 points​

Answer 1

Answer:

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Question

The water is flowing through a tapering pipe having diameters 300 mm and 150 mm at sections 1 and 2 respectively.Th

Explanation:

Answer 2

Explanation:

Given The water is flowing through a tapering pipe having diameters 300 mm and 150 mm at sections 1 and 2 respectively.The discharge through the pipe is 40 litres/sec .The section 1 is 10 m above datum and section 2 is 6 m above datum.Find the intensity of pressure at section 2 if at section 1 is 400 kN/m^2

• D1 = 300 mm = 300 x 10^-3 m
• D2 = 150 mm = 150 x 10^-3 m
• Q = 40 L / S
•    = 40 / 1000
•     = 0.04 m^2/s
• P1 = 400 KN / m^2  
•      = 400 x 10^3 N/m^2
• H1 = 10 m
• H2 = 6 m
• Q = A1V1 = A2V2
• So V1 = Q / A1
•            = 0.04 / 0.017065
•            = 0.56617
• So V2 = Q / A2
•            = 0.04 / 0.01766
•            = 2.2650
• P1 / ρg + V1^2 / 2g + h1 = P2 / ρg + V2^2 / 2g + h2
• 400 x 10^3 / 9.8 x 1000 + (0.56617)^2 / 2 x 9.81 + 10 = P2 / 1000 x 9.81 + (2.2650)^2 / 2 x 9.81 + 6
• 40.77 + 0.01633 + 10 = P2 / 9810 + 0.261479 + 6
• P2 / 9810 = 44.524857
• Or P2 = 436788.788

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