Continuous measurement of moisture in paper is done by_______________?
Correct answer: D. High resistance Wheatstone bridge circuit
- A. Sling psychrometer
- B. Hair-hygrometer
- C. Weighing
- D. High resistance Wheatstone bridge circuit
Explanation
In continuous paper-moisture measurement, water changes the electrical resistance of the paper, and a high-resistance Wheatstone bridge circuit converts that change into a moisture indication. Sling psychrometers and hair hygrometers are mainly for air humidity, not continuous moving-paper measurement.
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