Practice Flow Through Orifices (5) - Rotodynamic Machines - Fluid Mechanics & Hydraulic Machines

Practice: Flow Through Orifices

Lesson 5Rotodynamic Machines

Practise this section

10 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What does C_d represent in the orifice discharge equation?
Show hintHide hint
Think about how quickly the fluid can flow through the orifice.
Question 2.
What is the formula for discharge through a free jet orifice?
Show hintHide hint
Remember the relationship between area, gravity, and height.
3Question 3.
What is the primary formula used to calculate discharge through a free jet orifice?
- Q = C_d A \\\\sqrt{g(h)}
- Q = C_d A \\\\sqrt{2gh}
- Q = A \\\\sqrt{gh}
- Q = Hg \\\\sqrt{g}
Show hintHide hint
Observe how area and height contribute to the flow.
4Question 4.
A larger orifice area leads to what effect on discharge, assuming height remains constant?
- True
- False
Show hintHide hint
Think about the concept of flow rate.
Question 5.
If a free jet orifice has a diameter of 0.1 m, find the discharge for a height of fluid 15 meters. Assume C_d = 0.7. Discuss how discharge would change if the height were increased to 20 meters.
Show hintHide hint
Enhance your calculation by re-evaluating Q for increased height.
Question 6.
In a piping system designed for a certain orifice, if the discharge coefficient is noted to decrease, what should be identified first to restore the anticipated flow rate? Provide potential solutions.
Show hintHide hint
Think about the factors that influence the discharge coefficient besides the orifice itself.

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