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An n-type semiconductor is known to have an electron concentration of 5 × 10 ^17 m-3 . If the electron drift velocity is 350 m/s in an electric field of 1000 V/m, calculate the conductivity of
The National Electrical Code specifies, among otherthings, values for the minimum allowable cross-sectional area ofconductors for a given voltage and allowable total length ofcircuits depending on t
A circuit is needed to divide a 10 Hz signal down to 1 Hz. using only a 7493 4 bit counter produce a logig diagram for both designs , hook the clock input to a 10 Hz clock on the logic designer and
A 230V, 25hp, shunt DC motor draws an armature current of 90Aat full rated load. The armature resistance is 0.2 ohms and theshunt field resistance is 216 ohms. Determine the rotational lossesand mot
A 600V, 150hp, DC series motor operates at it's full-ratedload at 600 RPM. The armature resistance is 0.12 ohms and the series field resistance is 0.04 ohms. The motor draws 200A at full load.
A shunt DC generator has a termianl voltage duringopen-circuit of 127V. When the machine is operating at rated load,the rated terminal voltage is 120V. Find the load current ifthe field resistance i
A separately excited DC generator,when running at 1200 RPM, supplies 200A at 125V to a circuit ofconstant resistance. What will the current be when the speed is dropped to 1000 RPM if the field curr
If the change in voltage is assumed to be linear between no-load and full-load kilowatts, calculate the kilo watt output of the generator when the terminal voltages are 240V and 235V.
Describe how I/O ports are accessed in system that uses Memory-Mapped I/O and how they are accessed in a system that uses Direct I/O. List the advantages and disadvantages of each type of port addre
Assuming that an ARM-based processor register containsox12345678, show the order in which the bytes of this word would be written in memory starting at address 0x00000000 in a machine that uses Litt
A circular ring of charge of radius a lies in the x-y plane and iscentered at the origin. If the ring is in air and carries a uniform density ρl show that the electric potential at(0,0,z) is giv
Hecreates a frequency spectrum and plots it. He observes a peak inthe spectrum at 105 Hz. With just one sampling rate, however, Jared cannot be sure that this is the true or actual frequency compone
Show that your result reduces tothe expression given by E = D / ε0 = rDr / ε0 = r ρl /2πε0r as the length L is extended toinfinity. (r is properly defined as the radia
Determine the Fourier series coefficients for the following discrete-time periodic signal. Plot the magnitude and phasefor each set of coefficients ak x[n] = sin(2πn/3)*cos(πn/2)
A system has power gain of 52. Directivity is measured as 90 and the dissipated power in an antenna with a gain of 700 is 1.9 watts. what is the EIRP in watts and dBm
Your circuit should output a signal X that can be used to turn a buzzeron or off, where high implies on. The buzzer should be on if theignition is on and if the door is open or the seat belt is not
Given four 2-μF capacitors, find the maximum value and minimum value that can be obtained by inter connecting thecapacitors in series/parallel combinations.
Let a 4x inverter have transistors four times as wide as those of aunit inverter. If a unit inverter has three units of inputcapacitance and parasidic delay of pinv, what is the input capacitance of
A cube 2 m on a side is located in the first Octant in theCartesian co-ordinate system, with one of its corners at theorigin. Find the total charge contained in the cube if the chargedensity is give
A 4-bit adder will be used to add a 3-bit unsigned number (0-7) and a 2-bit unsigned number (0-3), producing a 4-bit result. Design a combinational circuit with a complete truth table, K-maps and ci
If the 8086 execution unit calculates an effective address of 14A3H and DS contains 7000H, what physical address will the BIU produce
When the circuit is redrawn why does the capacitor move to be in parallel with the resistor when it is originally in series with the resistor
Several type 741 op-amps, some switching diodes,and +5 V and -5 V power supplies are also available. Draw acircuit diagram showing how an inverting amplifier with a gain of -1.5 can beconstructed wi
a) what is the advantage of using assembly language instead of writting a program directaly in machine language b) describe the operation an 8086 will perform when itexecutes ADD AX, BX
a) what is the advantage of using a CPU register for temporarydata storage over using a memory location. b) If the stack segment register contains 3000H and the stackpointer register contains 8434H.