Engine : General Subjects - 1668/1128
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| What is the operating principle of a variable area flow meter, such as a rotameter? |
| A) The float or rotor is less dense than the fluid being measured and is positioned so that the gravitational force up is balanced by the downward motion of the fluid flow. |
| B) The float or rotor is more dense than the fluid being measured and is positioned so that the gravitational force down is balanced by the upward motion of the fluid flow. |
| C) The float or rotor is less dense than the fluid being measured and is positioned so that the gravitational force down is balanced by the upward motion of the fluid flow. |
| D) The float or rotor is more dense than the fluid being measured and is positioned so that the gravitational force up is balanced by the downward motion of the fluid flow. |
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| techlabo - 2025-01-28 08:08:58 Registered (12) |
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| EdwardPino - 2025-01-20 21:15:19 Registered (3) |
| A variable area flow meter, like a rotameter, operates on the principle of changing flow area to measure fluid flow. As the flow increases, the float rises, expanding the area and indicating flow rate. This principle reminds me of games like friday night funkin, where timing and rhythm vary, creating dynamic interactions! Anyone here use rotameters in interesting ways? |
| Dsaunders242 - 2024-11-11 14:46:44 Member (1) |
| C) The float or rotor is less dense than the fluid being measured and is positioned so that the downward motion of the fluid flow balances the gravitational force. In a variable area flow meter, such as a rotameter, the fluid flow lifts a float (or rotor) inside a tapered tube. The float is typically less dense than the fluid and moves upwards as the flow rate increases, creating a larger flow area. Two forces balance the position of the float: The upward force from the fluid flow increases with the flow rate. The downward gravitational force acting on the float. As the flow rate increases, the float rises until the upward force from the flow is equal to the downward gravitational force, and the position of the float indicates the flow rate |