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1. What is a Poynting vector? What is its physical significance?
2. What is the physical interpretation of the surface integral of the Poynting vector over a closed surface?
3. Discuss how the fields far from a physical antenna vary inversely proportional to the distance from the antenna.
4. Discuss the interpretation of energy storage in the electric and magnetic fields of a uniform plane wave.
Sketch a graph of the drain-source current, IDS, as a function of drain-source voltage, VDS, for an enhancement-mode NMOS transistor with a threshold voltage of 1 V. On the same graph indicate how this curve would be shifted for a depletion-mode N..
(A) A 6-H and 4-H coil are connected in series. What is thevalue of the total inductance (B) What is the value of thetotal inductance when the same two coils are connected inparallel
Write a MATLAB program than can find and plot the pendulum angle as a function of time given an initial swing angle f=f/2. Using the plot command of MATLAB, display and animate a pendulum swinging based on the described conditions.
A 100V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.25 ohm. The motor runs at a speed of 600 rev/min when the shaft torque is 27.14 Nm. Friction and windage losses at this speed are 300W.
Light traveling in air strikes a glass plate at an angle θ1 = 33 degrees, where θ1 is measured between the incoming ray and the glass surface. Upon striking the glass, part of the beam is reflected and part is refracted.
Determine the r.m.s. voltage of V2 if the reading on the ammeter, which reads true r.m.s, is to be 5 A. Calculate the power factor of the load for the conditions set in (a) above.
design the sign extension component of an I-Format Data Path Unit, where a 16 bit number will be extended to a 32-bit number, while mainintaing the sign (signed numbers use 2s complement).
por uma secccedilatildeo transversal de um fio de cobre passam 20c de carga em 2 segundos. qual eacute a intensidade da
Design a Mealy sequential machine with two inputs A and B, and one output Z. Output Z generates 1 if: (a) A had the same value at each of the two previous clock ticks, or (b) B has been 1 since the last time that the first condition was true.
Suppose a pure Si crystal has 5 × 1028 atoms m-3. It is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and holes. Given that ni =1.5 × 1016 m-3.?
To get a fast roll-off and a linear-phase response, somebody has cascaded a Butterworth filter with an all-pass filter. Tell me what each of these filters does.
The torque T causes a rotation of 0.68 at end B of the aluminum bar shown. Knowing that b = 15 mm and G = 26 GPa, determine the maximum shearing stress in the bar.
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