[Solved] Which of the following instrument is used to measure the hum (2024)

FAQs

What instrument is used to measure hum? ›

hygrometer, instrument used in meteorological science to measure the humidity, or amount of water vapour in the air.

A hypsometer is an instrument for measuring height or elevation. Two different principles may be used: trigonometry and atmospheric pressure.

A sound level meter (also called sound pressure level meter (SPL)) is used for acoustic measurements. It is commonly a hand-held instrument with a microphone. The best type of microphone for sound level meters is the condenser microphone, which combines precision with stability and reliability.

A hydrometer is an instrument that is used to measure the density/specific gravity of liquids. Hydrometers are calibrated for different uses. It is specifically used for measuring low-density liquids.

Measuring tools for length include rulers, tape measures, and micrometer screw gauges, but the tool that is the most precise is the vernier caliper. Vernier calipers are a precision type tool with sliding jaws attached to a graduated beam.

A hygrometer is an instrument which measures the humidity of air or some other gas: that is, how much water vapor it contains.

Mass is typically measured using instruments such as balances, scales, and mass spectrometers. A balance is a device that measures mass by balancing an object against a known mass. There are different types of balances, including beam balances, spring balances, and electronic balances.

A manometer is a measuring instrument that measures the pressure of a fluid or gas in a confined space, for example in a boiler. A manometer indicates the pressure relative to the atmospheric pressure.

The most common instruments used for measuring noise are the sound level meter (SLM), the integrating sound level meter (ISLM), and the noise dosimeter.

Decibel Meters: Exploring Sound Level Measurement Devices and Their Applications.

What measurement is used for noise? ›

Noise level is measured in decibels (dB). The louder the noise, the higher the decibels.

By using the hydrometer, you measure how dense your beer or wine is. This measurement means that you can estimate how much-dissolved brewing sugar is in the brew. The gravity of the unfermented wort or must is called the original gravity (OG).

The hydrometer analysis is a widely used method of obtaining an estimate of the distribution of soil particle sizes from the #200 (0.075 mm) sieve to around 0.001 mm. The data are plotted on a semi-log plot of percent finer versus grain diameters to represent the particle size distribution.

Fill the jar to about 35mm from the top and simply drop the hydrometer into the liquid. As illustrated to the right, you should take the reading from the lower of the two levels you see when looking at the side of the test jar. This reading is quite simply the Specific Gravity (SG).

Do you know the difference between a hygrometer and a hydrometer? A hygrometer measures humidity, the amount of water vapour in air. A hydrometer, on the other hand, measures the density or specific gravity (SG) of a liquid by floating in the liquid.

A psychrometer is a device for measuring air humidity. It does so by measuring the temperature difference between a dry thermometer bulb and a wet thermometer bulb that has lost some moisture due to evaporation.

Dew-point Hygrometer usually consists of a polished mirror (made of metal) that is cooled at a fixed pressure and vapour content till moisture just begins to settle on it. Dew point is the metal's temperature at which condensation starts.