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A fluid jet discharging from a 4 cm diameter orifice has a diameter 3 cm at its vena contracta. If the coefficient of velocity is 0.98, the coefficient of discharge for the orifice will be
  • a)
    0.98 x (0.75)2
  • b)
    (0.75)2/0.98
  • c)
    0.9 8 x (1.33)2
  • d)
    0.98/(1.33)2
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A fluid jet discharging from a 4 cm diameter orifice has a diameter 3 ...
For an orifice the coefficient of discharge Cd, coefficient of velocity Cv and coefficient of contraction Cc is related as,
Cd = Cc x Cv

Cd = (0.75)2 x 0.98
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Most Upvoted Answer
A fluid jet discharging from a 4 cm diameter orifice has a diameter 3 ...
Given:
- Diameter of orifice (D1) = 4 cm
- Diameter at vena contracta (D2) = 3 cm
- Coefficient of velocity (Cv) = 0.98

To find:
- Coefficient of discharge (Cd)

Solution:
1. Area of orifice (A1) = π/4 * D1^2
2. Area at vena contracta (A2) = π/4 * D2^2
3. Velocity at vena contracta (V2) = Cv * sqrt(2*g) * sqrt(h)
where g is acceleration due to gravity and h is the head of fluid above the center of orifice.
4. Discharge through orifice (Q) = A2 * V2
5. Coefficient of discharge (Cd) = Q / A1 * sqrt(2*g*h)
6. Substituting values, Cd = (π/4 * D2^2 * Cv * sqrt(2*g*h)) / (π/4 * D1^2 * sqrt(2*g*h))
7. Simplifying, Cd = Cv * (D2/D1)^2

Now, substitute the given values to get:
Cd = 0.98 * (3/4)^2
= 0.98 * 0.5625
= 0.5456

Therefore, the correct answer is option 'A'.
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Community Answer
A fluid jet discharging from a 4 cm diameter orifice has a diameter 3 ...
For an orifice the coefficient of discharge Cd, coefficient of velocity Cv and coefficient of contraction Cc is related as,
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A fluid jet discharging from a 4 cm diameter orifice has a diameter 3 cm at its vena contracta. If the coefficient of velocity is 0.98, the coefficient of discharge for the orifice will bea)0.98 x (0.75)2b)(0.75)2/0.98c)0.9 8 x (1.33)2d)0.98/(1.33)2Correct answer is option 'A'. Can you explain this answer?
Question Description
A fluid jet discharging from a 4 cm diameter orifice has a diameter 3 cm at its vena contracta. If the coefficient of velocity is 0.98, the coefficient of discharge for the orifice will bea)0.98 x (0.75)2b)(0.75)2/0.98c)0.9 8 x (1.33)2d)0.98/(1.33)2Correct answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A fluid jet discharging from a 4 cm diameter orifice has a diameter 3 cm at its vena contracta. If the coefficient of velocity is 0.98, the coefficient of discharge for the orifice will bea)0.98 x (0.75)2b)(0.75)2/0.98c)0.9 8 x (1.33)2d)0.98/(1.33)2Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A fluid jet discharging from a 4 cm diameter orifice has a diameter 3 cm at its vena contracta. If the coefficient of velocity is 0.98, the coefficient of discharge for the orifice will bea)0.98 x (0.75)2b)(0.75)2/0.98c)0.9 8 x (1.33)2d)0.98/(1.33)2Correct answer is option 'A'. Can you explain this answer?.
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