February 23, 2021

Large number and variety of variables are involved in measurement in practice. These variables may be constant with time or time varying. Measurement of the weight of an object is the example of time constant measurement. The measurement of pressure inside an I.C. engine is an example of time varying measurement. Output of a time

Measurement is a comparison of a given unknown quantity with one of its predetermined standard values adopted as a unit. Metric system of measurement provides us with means of describing various phenomena in quantitative terms. It plays an important role in all branches of engineering and science. There are two important requirements of the measurement: