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Assume two cables have wire strands that are the same diameter and made of the same material. If one cable has 7 strands and another has 19 strands, which will have more resistance over a mile
A 100 V power supply has a series limmitin restor of 100 k ohms connected to its output. draw the norton equivalent cirtuit for the power supply. explain why the norton equivalent circuit you drew
A common energy consumption for a family is about 1000 kW hr / month. How much power would that be on the average. (Hint: Notice that hour and month are both units of time so kW hr per month is r
Design a circuit that takes a sinusoidal input of varying frequency at 1V amplitude and produces an output amplitude of approximately 1V when the frequency is 1 Hz and approximately 0.5V when the fr
Calculate the sag in a 90-yard span of a 0.035 -in^2 overhead line when covered with ice to a radial thickness of 5/8 in, in a wind that exerts a pressure of 9 lb/ft^2, assume the breaking load as 1
Assume the widths of the two sides of the junction are much greater than the respective minority-carrier diffusion length. Calculate the applied voltage at a forward current of 1 mA at 300K.
find the MIN permissible SAG for a span of 225 m using a copper conductor with 1.2 cm diameter and allowing a MAX conductor tension of 2200 kg/cm^2 . The horizontal wind pressure is 6 g/cm^2 and spe
An overhead line conductor is supported at water crossing from two towers, the heights of the supports being 30 and 34.2 m respectively , above the water level , with a horizontal span of 325 m.
An abrupt p-n junction has a doping concentration of 1015, 1016, or 1017 cm-3 on the lightly doped n-side and of 1019 cm-3 on the heavily doped p-side. Obtain series of curves of 1/C2 versus V, wher
3-phase-Y-connected load of 40,000W at 0.8 PF lag is supplied by a three-phase Y-connected source of 500V. Find the current and phase voltages. Assuming Van as ref. Determine Ian, Ibn, Icn, Vab, Vbc
Suppose you want to build a simple RS flip-flop that is set and reset by negativegoing pulses. All you have are two 2-input AND's and two 2-input NOR's. Show how you would build this odd circuit fro
3-phase line, which has an impedance of 2 + j4 per phase, feeds two balanced three-phase loads that are connected in parallel. One of the loads is Y-connected with an impedance of (20 + j40) per ph
Two particles are fixed to an x axis: particle 1 of charge q1 = 2.03 x 10-8 C at x = 16.0 cm and particle 2 of charge q2 = -4.62q1 at x = 77.9 cm. At what coordinate on the x axis is the electric fi
While both triangular and sawtooth waveforms work in a PWM modulator, it does affect the phase of the PWM output and being able to control this can be useful. Consider your resistor and capacitor ch
A causal discrete LTI system is described by y(n)-3/4 y(n-1)+1/8 y(n-2)=x(n) where x(n) is the input and y(n) is the output Find the response of the system if x(n) =u(n)
(a) Find Cox and (b) For an NMOS transistor with W/L = 15 m/0.25 m, calculate the values of VOV , VGS, and VDSmin needed to operate the transistor in the saturation region with a dc current ID= 0.8
A uniform electric field exists in the region between two oppositely charged plane parallel plates. An electron is released from rest at the surface of the negatively charged plate and strikes the s
What happens to the program counter (PC) when a subroutine is called. What register is used to keep track of the return point. What happens to the register that keeps track of the return point if a
A (3V, 300mA) flashlight bulb is to be used as the dial light in a 120V radio. What is the resistance of the resistor that should be connected in series with the flashlight bulb to limit the current
A parallel circuit consists of a source and 15 ohm and 30 ohm resistors. The resistor of 15ohm draws a current of 8A. a) Find the current out of the current source. b) Find the current through the 30
A string of Christmas tree lights of eight (6W, 15V) bulbs connected in series. a) What current flows when the string is plugged into a 120V outlet b) What is the resistance of each bulb
A series circuit consists of a 240V source and 20ohm, 30ohm, and 10ohm resistors. a) Find the current out of the positive terminal of the voltage source. b) Find the voltage across each resistor.
What is the equivalent (total) resistance of 100, 200, and 50 resistors connected in series What is the equivalent (total) resistance of 100, 200, and 50 resistors connected in parallel
Design a circuit that given a 4-bit BCD digit(0-9) willproduce a 2-bit quotient and a 2-bit remainder for a division by3. This circuit will have four inputs the four bits of theBCD digit and four o
a single span of an overhead line is 250 ft in length, having the supporting poles at the same level. the maximum tension in the conductor is 855 lb. the weight of conductor is 0.125 lb/ft.