ISRO Mechanical & Aerospace 2010 - Question 79

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Given that: Specific gravity of mercury = 13.6; Intensity of pressure = 40 kPa. Express the intensity of pressure (gauge) in various units (S.I.)

  • A. 0.3 bar, 3.077 m of water, 0.15 m of mercury
  • B. 0.4 bar, 4.077 m of water, 0.299 m of mercury
  • C. 0.5 bar, 5.077 m of water, 0.339 m of mercury
  • D. None of the above

Answer: B. 0.4 bar, 4.077 m of water, 0.299 m of mercury

Explanation: 40 kPa = 0.4 bar. Head water = 40/9.81 = 4.077m. Head Hg = 4.077/13.6 = 0.299m.

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