B. Consider the circuits shown in Fig. 1 and Fig. 2. Assume that you have the meter readings, that they are free of error, and that you have the characteristics of each meter. 1. Derive a formula for calculating the true value of Rx, in terms of Rv and RA, for the circuit of Fig. 1. 2. Do the same for Fig. 2. 10 v FIG. 2 + Rx A ww V

Problem 20. The current I flowing in a resistor R is measured by a 0-10A ammeter which gives an indi- cation of 6.25 A. The voltage V across the resistor is measured by a 0-50V voltmeter, which gives an indication of 36.5 V. Determine the resistance of the resistor, and its accuracy of measurement if both instru- ments have a limit of error of 2% of f.s.d. Neglect any loading effects of the instruments.

Measuring the component current through a resistor in a circuit with two resistors connected in parallel. Procedure: 1.       Assemble circuit as shown in Fig. 1. 2.       Make sure the polarity of the voltage source and the measuring instruments is correct, and that the correct measurement range has been selected. 3.      Set the input voltage Vin at 10 V. Measure the total current Itot and record this in Table 2. 4.       Measure the current I1 in the branch with resistor R1 = 100 W and record this value in Table 1. 5.      Measure the current I2 in the branch with resistor R2 = 1 kW and record this value in Table 1.   Data: Vin = 10 V      I total       I1     I2         Evaluation: 1.      Calculate the total resistance Rtot of the parallel connections of R1 and R2 using the formula               2.      Compare the ratio I1/I2 of the component currents with the ratio R1/R2 of the component resistances and confirm Kirchoff’s first law.…

1. A small chrome plating tank needs a 1000 ampere source. Design an ammeter shunt for a 50 µA D'Arsonal meter movement that has a coil resistance of 2500 ohms. What is the resistance of the shunt in parallel with the meter? O a. 50 micro ohms O b. 10 micro ohms O c. 100 micro ohms O d. 125 micro ohms O e. 250 micro ohms

Q18. For a lead acid battery, you can often use the Peukert prediction to assess the capacity it canoffer under a given testing current. If you know that Cp = 100 Ah, k = 1.5 for this lead acidbattery, you can predict that the capacity measured at testing current of 4 A as:A. 100 AhB. 50 AhC. 25 AhD. 5 Ah

Lumean Area Method 1. A room 100 ft x 300 ft requires 80 foot-candle. It is to be illuminated byduplex fluorescent lamp. The 2-T20 watt lamp has an output of 3200lumens, maintenance factor is 0.7 and coefficient of utilization is 0.6.Calculate the number of luminaires. 2. A room 20 m by 10 m is to be illuminated by 10 lamps at an averageillumination of 50 lux. If CU = 0.50 and MF = 0.83, the mean sphericalcandlepower of each lamp is nearest to…

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Companies designs, creates, and sells Integrated Circuits (chips). What do your buyers useto compare your IC products against your competition’s? Give 3 types of IC benchmarkmeasurements in short answer

a) Determine the branch I0. You can apply any circuit analysis methods that helps to calculate circuit parameters.  b) What is the power that is absorbed by R0? c) If you have a set of resistors with quarter watt, half watt, and one watt power wattage; what would be the best choice to select for the resistor.

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