Understanding of Introductory Concepts of Measurement and Testing and the Meaning of Related Terms and Expressions

Q1.Distinguish between mment and testing A1.Measurement is specify as the sight of data, the value of certain variables such as resistance, potential drop and latest whitethorn be found at certain points in a circuit or system. These value are obtained victimization relevant measurement instruments and techniques. Testing is defined as manipulating the values gained during the measurement physique described above to determine whether or not a circuit or system under test is run correctly or at supreme efficiency. Q2.Explain the meaning of reply and indicate what determines it for an elongate and for a digital measuring doodad. A2.Resolution is defined as the magnitude of signal equal to one find of the least significant digit of the display. This way the smallest signal ability that it is possible to measure. For a digital twisting the resolution is impelled by the number of digits after the decimal fraction point on a particular range. For an analogue eddy r esolution is refractory by the width of the needle and the set between abutting graticules on the display. Q3.Distinguish between accuracy and aesthesia of an instrument, quote examples of ordinary identification numbers for analogue and digital meters A3.

Accuracy is the limit, commonly expressed as a percentage of full scurf deflection (FSD) not exceeded by errors when the instrument is under quotation conditions ie if the accuracy of a certain whatsis is 1% of FSD between certain temperatures, if the device if used between those temperatures to measure voltages on a 10V range, the maximum difference between the voltage being measured and that displayed should be 1% of 10V (0 .1V). The accuracy figure is required as no ! instrument will invariably be perfectly accurate. Typical accuracy for a digital device is +/- 0.1V + 2LSD (Least Significant Digit). Typical accuracy for an analogue device is +/- 2.5% FSD. Usually quoted... If you want to get a full essay, do it on our website: OrderEssay.net

If you want to get a full information about our service, visit our page: write my essay