जब डॉल्फिन हवा के माध्यम से तैरती है, तो यह पारे का  0.75 m बाह्य दाब का अनुभव करती है। डॉल्फिन पर निरपेक्ष दाब कितना होगा जब वह पानी की मुक्त सतह से 5 m नीचे होती है?

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ESE Mechanical 2014 Official Paper - 1
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  1. 0.10 N/mm2
  2. 0.5 N/mm2
  3. 1.0 N/mm2
  4. 0.15 N/mm2

Answer (Detailed Solution Below)

Option 4 : 0.15 N/mm2
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Detailed Solution

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संकल्पना:

गणितीय रुप से,इसे निम्न प्रकार से निरुपित किया जा सकता है:

निरपेक्ष दाब = वायुमंडलीय दाब + गेज दाब

Pabs = Pgauge + Patm

SSC JE MEchanical 2 14

गणना:

दिया गया है:

h = 5 m

Patm = पारे का 0.75 m = ρHg × g × 0.75 = 13600 × 9.81 × 0.75 = 100062 Pa

Pgauge = ρwater × g × h

Pgauge = 1000 × 9.81 × 5 = 49050 Pa

Pabs = Pgauge + Patm

Pabs = 49050 + 100062

Pabs = 149112 Pa = 149112 N/m2 = 0.149 N/mm20.15 N/mm2

 

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