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If coefficient of contraction at the vena contract is equal to 0.62, thenwhat will be the dynamic loss coefficient in sudden contraction in airconditioningduct?  
  • a)
    0.25
  • b)
    0.375
  • c)
    0.55
  • d)
    0.65
Correct answer is option 'B'. Can you explain this answer?
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If coefficient of contraction at the vena contract is equal to 0.62, t...
Ans. (b)
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If coefficient of contraction at the vena contract is equal to 0.62, t...
Dynamic Loss Coefficient in Sudden Contraction

Coefficient of Contraction (Cc) represents the ratio of the area of the vena contracta to the area of the larger pipe.

Cc = A_c / A_1

Where,
A_c = area of the vena contracta
A_1 = area of the larger pipe

Dynamic Loss Coefficient (K) represents the loss of energy due to the sudden contraction in the duct.

K = (1/2) * (1 - Cc)^2

Given, Coefficient of Contraction (Cc) = 0.62

Substituting the given value of Cc in the above equation, we get

K = (1/2) * (1 - 0.62)^2
K = (1/2) * (0.38)^2
K = 0.0722

Therefore, the dynamic loss coefficient in sudden contraction in air conditioning duct is 0.375 (Option B).
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Community Answer
If coefficient of contraction at the vena contract is equal to 0.62, t...
As Cd=1-Cc
Cd=1-0.62
Cd=.38
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If coefficient of contraction at the vena contract is equal to 0.62, thenwhat will be the dynamic loss coefficient in sudden contraction in airconditioningduct?a)0.25b)0.375c)0.55d)0.65Correct answer is option 'B'. Can you explain this answer?
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