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Rotameter is a device used to measure:
  • a)
    Rotation
  • b)
    Absolute pressure
  • c)
    Velocity of fluid
  • d)
    Flow rate
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Rotameter is a device used to measure:a)Rotationb)Absolute pressurec)...
A rotameter is a device that measures the flow rate of fluid in a closed tube.
It is a variable area type of flow meter. In this, a float rises inside a conically shaped glass tube; as the flow increases, its position on a scale can be read off as the flow rate.
The construction is as shown:
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Rotameter is a device used to measure:a)Rotationb)Absolute pressurec)...
Flow Rate Measurement with Rotameter
Rotameter is a device used to measure the flow rate of fluids. It works based on the principle of variable area flow measurement. Here's how it measures flow rate:

Variable Area Flow Measurement
- In a rotameter, a tapered tube is placed vertically with a float inside it.
- The fluid flows from the bottom of the tube, causing the float to move upwards.
- As the flow rate increases, the float rises to a higher position in the tube.
- The position of the float inside the tube indicates the flow rate of the fluid.

Calibration
- Rotameters are calibrated for specific fluids and flow rates to provide accurate measurements.
- The flow rate is usually indicated by the position of the float relative to a scale marked on the tube.

Advantages of Rotameters
- Rotameters are simple, cost-effective, and easy to install.
- They provide a visual indication of flow rate, making them easy to read and interpret.

Limitations
- Rotameters may not be suitable for high-pressure or high-temperature applications.
- They may not provide as precise measurements as other flow measurement devices in certain scenarios.
In conclusion, a rotameter is a useful device for measuring the flow rate of fluids in various applications where accurate flow rate monitoring is required.
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Rotameter is a device used to measure:a)Rotationb)Absolute pressurec)Velocity of fluidd)Flow rateCorrect answer is option 'D'. Can you explain this answer?
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