Practice Application Of The Darcy Weisbach Equation (2.1.2) - Friction Factors and Energy Losses

Practice: Application of the Darcy Weisbach Equation

Lesson 2.1.2Friction Factors and Energy Losses

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8 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the loss coefficient at the entry of a pipe?
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Think of the formula used to describe entry losses.
Question 2.
What does the friction factor represent?
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It's related to how smooth the inside of the pipe is.
3Question 3.
What is the main purpose of the Darcy Weisbach equation?
- To calculate total pressure in a pipe
- To compute head loss due to friction
- To determine velocity of flow
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Think about what happens when fluid flows and encounters resistance.
4Question 4.
The loss coefficient at the entry of a pipe is generally considered to be?
- True
- False
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Remember the general values used for entry and exit.
Question 5.
Calculate the required horsepower for a pump in a system with conditions: head loss = 20m, diameter = 0.1m, length = 500m, friction factor = 0.02. Efficiency of the pump is 75%.
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Use the formula Power = Weight flow x Head loss / Efficiency.
Question 6.
A water system experiences a Reynolds number of 60,000 and uses tubing with a roughness ratio. How would you interpret the friction factor from Moody's chart given this Reynolds number?
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Remember how turbulent flow behaves as compared to laminar flow.

4 more questions in this section. Enroll free to practise them all.