The coefficient of discharge for venturimeter (Cd) ranges from _______

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SSC JE CE Previous Year Paper 12 (Held on 23 September 2019 Evening)
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  1. 0.50 – 0.55
  2. 0.61 – 0.65
  3. 0.61 – 0.69
  4. 0.95 – 0.99

Answer (Detailed Solution Below)

Option 4 : 0.95 – 0.99
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Detailed Solution

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Explanation:

Coefficient of discharge is the ratio of actual discharge to the theoretical discharge.

Coefficient of discharge

 Venturimeter – 0.95 to 0.98

⇒ Orifice meter – 0.62 to 0.65

⇒ Nozzle meter – 0.93 to 0.98

∴ Coefficient of discharge for venturi meter lies is higher than the nozzle meter and orifice meter.

Confusion Point:

Although the maximum value of the coefficient of discharge of nozzle meter and venturi meter appears to be same, the average value of the coefficient of discharge of venturi meter is more than nozzle meter.

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