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A science student is building a circut. He has aquired a 8V .5A DC source. However, the LED lights in the circut need 3V or they will burn out. How much resistance should he use to make the circut run at 3V?
A balanced, three-phase, Y-connected source has a line voltage of 440 Vrms. The source frequency is 60 Hz. The balanced, three-phase loads have the following characteristics: Zy1: P1 = 15 kW and Q1 = +18 kVAR Z?2: |S2|=21 kVA and PF2 = 0.500 laggin..
When a cloud passes over a certain spot on the surface of the earth a vertical electric field of E = 100 V/m is recorded there. The bottom of the cloud is a height d = 300m above the earth and the top of the cloud is 600m above the ground.
a differential protection system with a power transformer 450MVA, 230/115kV, determine: a. The current line on both sides of the power transformer b. Based on these current selection for the cts from the table. c. Set (identify) the corresponding con..
A state diagram for a particular finite state machine requires a total of 130 states. What is the minimum number of binary digits required to encode these states uniquely. This is actually the minimum number of flip-flops that can be used to imple..
Design a series resonant circuit to have a bandwidth of 400 Hz using a coil with a Ql of 20 and a resistance of 2 ohm. Find the values of L and C and the cutoff frequencies.
Determine for each of following 4 signals if it is bandlimited and, if yes, find the minimum sampling rate without causing aliasing. (a) x1(t) = cos(500pt) + sin(700pt); (b) x2(t) = sin2(50pt);
A one-quarter wavelength piece of 75 ohm microstrip line has a capactive load of XC = 22 ohms. What impedance does a driving generator
Transfer function : key informaiton, A linear time-invariant discrete-time system is excited by the input x[n] = d[n] + 2u[n-1] (d represents δ(delta)). The resulting output response with zero initial conditions is y[n] = ((0.5)^n * u[n]). De..
Design a two-pole low-pass Butterworth active filter using a unity-gain section to achieve a 3-dB frequency of 200 Hz. Select the two filter resistances as 30 kOhms each.
What is the maximum number of receptacles permited on a 15A; 120V branch circuit. A 20 A 120 V circuit. How many small appliances branch circuits are required to supply receptacles in the kitchen and dining areas of residences
what are the advantages and disadvantages of using PLDs, including FPGAs, as compared to using discreet logic-integrated circuit chips
In the presentation, the presenter, Mr. Rob Tucker discussed three types of disturbance mitigation responses or measures. List the three mitigation types and give a short definition of each of the mitigation type.
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