Electrical Engineering ⇒ Topic : Introduction of Electrical Instruments and Electrical Measurements
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Lalan
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Introduction Electrical energy is being used in the manufacture of many commodities. In order to ensure quality and efficiency, it is important that we should be able to measure accurately the electrical quantities involved. The instruments used to measure electrical quantities (e.g. current, voltage, power, energy etc.) are called electrical instruments. These instruments are generally named after the electrical quantity to be measured. Thus the instruments which measure cun-ent, voltage, power and energy are called ammeter, voltmeter, wattmeter and energy meter respectively. The accuracy,convenience and reliability of electrical instruments are mainly responsible for the widespread use of electrical methods of measurements. In this chapter, we shall confine our attention to the construction, working and applications of some important electrical instruments. | |
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