Electrical Engineering > EXAM REVIEW > electrical 101 chapter 1 and 2 (All)
electrical 101 chapter 1 and 2
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Unit one: Concept of Measurement Systems 1. Fundamental and derived units 2. Standards and their classifications 3. Methods of measurement 4. Measurement system and its elements 5. Classification... of instruments 6. Definitions of some static characteristics 1. INTRODUCTION Measurement is the act, or the result, of a quantitative comparison between a given quantity and a quantity of the same kind chosen as a unit. What does Measurement mean? What do you know about the word Measurement? The result of the measurement is expressed by a pointer deflection over a predefined scale or a number representing the ratio between the unknown quantity and the standard A standard is defined as the physical personification of the unit of measurement or its sub multiple or multiple values What does Standard mean? What do you know about the word standard? The device or instrument used for comparing the unknown quantity with the unit of measurement or a standard quantity is called a measuring instrument What does measuring instrument mean? What do you know about the word measuring instrument ? The value of the unknown quantity can be measured by direct or indirect methods [Show More]
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