Which of the following is a tool used to measure humidity?
A. Hygrometer
B. Thermocouple
C. Pressure gauge
D. Tachometer
Answer:A
Which of the following is a tool used to measure humidity?
A. Hygrometer B. Thermocouple C. Pressure gauge D. Tachometer
Explanation: Humidity is the amount of water vapor present in the air. To measure humidity, an instrument called a hygrometer is used. Hygrometers work by measuring the changes in electrical capacitance, resistance, or dew point that occur as the air is cooled to the point of condensation.