- Unit 1 10 Marks Natural Science Table 1 Measurement Error Example An 820 Ohm Resistance With An Accuracy Of Plus Mi 1 (66.12 KiB) Viewed 22 times
Unit 1: [10 marks: Natural Science] Table 1: Measurement Error Example An 820-ohm resistance with an accuracy of plus/minus 10 % carries a current of 10 mA. The current was measured by an analog ammeter on a 25-mA range with an accuracy of plus/minus 2 % of full scale. From Table 1, determine the absolute error in R (plus/minus) (ohms): 2 From Table 1, determine the absolute error in I of the full-scale range (plus/minus) (UA): 2 From Table 1, determine the relative error in measured I (plus/minus) (percentage): 2 Table 2: Measurement Systems Example V = 8 sin (150t + n/2 From Table 2, determine the crest factor (dimensionless): 2 From Error! Reference source not found., determine the time at which the point corresponding to zero degrees of the sine wave occurs (ms): 2 [10] Unit 2: [4 marks: Natural Science] Find the multiplier needed to divide the same length scale into eight equal logarithmic intervals from 11 to 400: 2 How many octaves are there between 300 Hz and 1500 Hz: 2 [4]