A rotameter works on the principle of variable

This question was previously asked in
ESE Electronics 2016 Paper I: Official Paper
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  1. Pressure
  2. Length
  3. Area
  4. Resistance

Answer (Detailed Solution Below)

Option 3 : Area
Free
ST 1: UPSC ESE (IES) Civil - Building Materials
20 Qs. 40 Marks 24 Mins

Detailed Solution

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  • Rotameter is a constant pressure drop variable area flowmeter.
  • It measures the flow rate of liquid or gas.
  • As area changes, there will be a change in the Volumetric flow rate.
  • No electricity is required.

  • The construction is as shown:

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