Problem 2Consider the power drawn by a resistance load in a DC circuit. The power is calculated as P = VI or P = 1²R. It isgiven that the normalized uncertainty or % percentage uncertainty in measurements of I, R, and V are the same.Find the uncertainty in P using the two different expressions for power. Is the uncertainty using the two methodsthe same? If not, WHY, explain?

Answered: Image /qna-images/answer/89499bab-87c1-4b09-bc27-8020c7d9f690.jpg

Answered: Problem 2 Consider the power drawn by a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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0.6. The resistance of a certain size of copper wire is given as. R = Ro[1 + a(T-20)] %3D where Ro-60+0.3 percent is the resistance at 20°C, a=0.004°C-1+1 percent is the temperature coefficient of resistance, and the temperature of the wire is T=30°C + 1 percent. Calculate the resistance of wire and its uncertainty.
Question 7
Using the value of 0.55s ± 0.17s calculate the value for g and the value for uncertainty in g. Using the formula provided in image.
1. In a certain experiment the relationship for P is given as: P = 3Q²R + QR. Q and R are experimentally measured and are given:R = 10 ± 0.1 and Q = 15 ± 0.2 Determine the percent (relative) uncertainty in calculating the value of P.
Find the value of M1, M2, and what is the percent error if the true value is 149 grams?
A thermocouple is used to measure the temperature T1. The thermocouple reference junction labeled 2 is at a temperature of 20°C. The voltage output is measured using a potentiometer and found to be 4.686 mV. What is T1 in degrees RK: if the temperature values are not in the table, you have to use interpolation. Select one: O a. 98 O b. 118 O c. 105 O d. 108 Previous page Next page
A temperature measurement system has the following specifications: -128 to 781°C Range Linearity error 0.29% FSO Hysteresis error 0.12% FSO Sensitivity error 0.04% FSO Zero drift 0.32% FSO FSO stands for "Full Scale Output". Estimate the overall instrument uncertainty for this system based on the available information. Use the maximum possible output range over the FSO in your computations.
A handbook value for the thermal expansion coefficient of a particular pure metal is a = 16.52 X 10-6 °C-1 and states that the possible error in this value should not exceed 0.4 × 10-6 °C-¹. Assuming that the population for a follows a rectangular distribution, estimate the standard uncertainty to be assigned.
What is Qh and Qc based on the table
A J-type thermocouple is used to measure the unknown steady-state temperature of a liquid. The sensor outputs a voltage of 2.532 mV. Using Equation 2 and Table 1.2, determine the unknown temperature. Show all calculations and assume the thermocouple is referenced to 0 °C. T = a₁ + a₂V + · ...+ a₂V² a a₁ 0.000 000 1.978 425 x 10-² -2.001 204 x 10¹7 1.036 969 x 10-¹1 -2.549 687 x 10-16 3.585 153 x 10-21 -5.344 285 x 10.26 5.099 890 x 10:³1 Table 1.2 -J-type thermocouple polynomial coefficients over the range of 0°C to 760°C ± 0.04°C 8₂ a3 a4 (2) as as a7
4. For a particular thermocouple, if one junction is maintained at 0°C (cold junction) and the other junction is used as a probe to measure the desired Celsius temperature t, the voltage V generated in the circuit related to the temperature t as V = t (a + bt) Further, for this thermocouple, when V is in millivolts, the two constants are a = 0.25 and b = -5.5 x10+. Determine the value of V if the measured temperature is 100°C.
a) The mass of a test specimen of metal alloy is measured to be m = 674.4 g. The procedure has a standard uncertainty of 1.0 g. The volume of the specimen is measured to be V = 261.1 mL with an estimated standard uncertainty of 0.1 mL. Estimate the density of the specimen and its uncertainty. b) Determine the relative uncertainty in the calculated volume of a cylinder if its height h can be measured with a standard uncertainty to within 2% and its radius R can be measured with a standard uncertainty within 1%.

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