Hot wire anemometer is used to measure the_________________?
Correct answer: C. Velocity of gases
- A. Velocity of liquids
- B. Temperature of liquids
- C. Velocity of gases
- D. Pressure of liquids
Explanation
A hot-wire anemometer measures gas velocity by detecting the cooling effect produced as moving gas passes over a heated wire. It is unsuitable for direct measurement of liquid velocity because the probe and heat-transfer characteristics differ.
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