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The resistance of a copper wire at 30oCis 50Ω. if the temperature coefficient of copperat 0oC is 0.00427, what is the resistance at100oC?
A lossless transmission line of electrical length l = 0.3? is terminated with a complex load impedance . Find the reflection coefficient at the load, the SWR on the line, the reflection coefficient at the input of the line
Which elements in the circuit are in parallel. what is the relationship between Va and Vb. Given that Va= 12V and V= 7V, determine the values of Vb and Vd.
Determine the max rms voltage that can be applied to the high side of the transformer without exceeding the rated_flux_density in the core if transformer is supplied by frequency of 50 Hz.
Write an instruction sequence to configure the SCI subsystem for operation with the following parameters: 1500 baud using a 9 MHz Bus Clock, 1 start bit, 9 data bits, 1 stop bit, no loop back, no idle line use, no wakeup, enabled receive and trans..
If 20 MHz of total spectrum is allocated for a duplex wireless cellular system and each simplex channel has 25 KHz RF bandwidth, find: (a) the number of duplex channels (b) the total number of channels per cell site, if N = 4 cell reuse is used.
Find the max instantaneous power delivered by the source, dissipated by R, and absorbed by L. What are the smallest instants (t > 0) at which these maxima occur.
The input, Vin, is differential not single-ended. Design an analog circuit with a transfer function of Vout = 50 Vin + 2.5 powered by a single +5 V supply. You may use any of the analog chips.
During calibration, and iron/constantan thermocouple is zeroed( set to emit a Zero Voltage) AT 0 DEGREES CELCIUS. At 750 degrees celcius, it emits a voltage of 38.8mV. Alinear Out/input relationships exists between 0 and 750 degrees celcius.
A unit for a telecommunications system is to be designed so as to have a minimum availability of 0.9994. The MTTR (mean time to repair) for the unit is estimated to be 24 hours.
Describe how a dielectric material responds to an alternating electric field. Describe how the permittivity might change with time for a polymer material like the paint as it dries and explain how this measurement could be used to find when the pa..
What are the most common insulators used for extremely high voltages. Explain your answer with, at least, two points foreach insulator. Hint. they can withstand much highertemperatures than rubber insulation.
design a digital lock. The lock will have four buttons for you to enter a secret three-digit code to unlock it. You will use the pushbuttons RON(3:0) on the FPGA board for this - RON(0) will represent the digit ‘0', RON(1) the digit ‘1', RON(2) th..
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