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What is the value of humidity in test laboratories for performing a measurement or any other operation?

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What is the value of humidity in test laboratories for performing a measurement or any other operation?

(a) 35±10%

(b) 45±10%

(c) 55±10%

(d) 65±10%

I got this question in semester exam.

My enquiry is from Conditions of Comparison topic in section Standards of Measurements of Engineering Metrology

1 Answer

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Correct option is (b) 45±10%

The explanation is: Lower RH value can invalidate measurement by building static charge. High value of RH can cause leakage. It should be maintained at 45±10%.

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