वेग 3 m/s के साथ व्यास 450 mm वाले एक पाइप के माध्यम से प्रवाहित होने वाले तरल पदार्थ को 300 mm और 200 mm व्यास के दो पाइपों में विभाजित किया जाता है। 300 mm व्यास वाले पाइप में प्रवाह का वेग 2.5 m/s है, तो 200 mm व्यास वाले पाइप के माध्यम से प्रवाह का वेग कितना होगा?

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ESE Mechanical 2014 Official Paper - 1
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  1. 2.5 m/s
  2. 5.55 m/s
  3. 7.25 m/s
  4. 9.56 m/s

Answer (Detailed Solution Below)

Option 4 : 9.56 m/s
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Detailed Solution

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संकल्पना:

निरंतरता के अनुसार, द्रव्य प्रवाह दर संरक्षित होगा। 

Q1 = Q2 + Q3

एक पाइप में प्रवाह दर को निम्न द्वारा ज्ञात किया गया है

Q = AV

गणना:

दिया गया है V1 = 3 m/s, D1 = 450 mm, V2 = 2.5 m/s, D2 = 300 mm, D3 = 200 mm;

निरंतरता से,

D12 V1 = D22 V2 + D32 V3

⇒ 4502 × 3 = 3002 × 2.5 + 2002 × V3

⇒ V3 = 9.56 m/s 

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