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A given material has a resistance of 20Ω at room temperature (20 degrees celcuius) and 25Ω at a temperature of 85 degrees celcius.a. Does the material have a positive or negative temperature coefficient? Why?b. Determine the value of the temperature coefficient at 20 degrees celcius.c. Assuming the resistance versus temperature function to be linear, determine the expected resistance of the material at 0 degrees celcius( the freezing point of water) and at 100 degrees celcius (the boiling point of water)
Write the logic equation for Y in terms of A,B,C that solves this problem, and draw the gate-level diagram.
An analog system requires an antenna signal power of 100pW to meet the required detected signal-to-noise ratio. Other system parameters are given as follows: Gt(dB) =4dB determine the minimum value of the transmitter power required.
Compare the by hand solution and the PSPICE simulation for a voltage amplifier which has an input resistance of 10kohms and an output resistance of 100ohms, and a gain of 100V/V. The voltage amplifier is capacitively coupled to a voltage source.
Calculate the electrostatic energy that is stored in the structure if the intermediate space is filled with a dielectric whose relative dielectric constant is 10 and a voltage is applied between the conductors creating an electric field.
The location of the zeroes in the spectrum suddenly changes to 5 kHz, 10 kHz, 15 kHz.... What parameter of the rectangular pulses has changed and what is its new value?
Given a two's complement, fixed point number with 8-bits of integer and 8-bits of fraction: A. What is the largest (most positive) number you can represent B. What is the most negative number you can represent
Design a microstrip transmission line with Z0 =100 ohm that will be etched onto a sielectric substrate with er = 3 and a thickness of 4 mm. what should be the width of the microstrip line
What will be the output voltage from the bridge for a change in temperature of 20o C The supply voltage to the bridge is 6.0 V and the temperature coefficient of resistance of the platinum is 0.0039 K-1.
A balanced Y-connected power system is known to have Van=100
The battery is made by connecting 5 unit cells in series and then by connecting 7 of these series cells in parallel. Each unit cell has the voltage of 1.25 V and the internal resistance if 3.4 Ohm.
The Schussing skier is on 25° slope. His mass is 80 Kg. The Kinetic coefficient of friction between his skis and the snow is μs = 0.08 . His velocity is 9 m/s. a) What is his acceleration in the direction parallel to the slope
Find the charge q as a function of time for the electrical circuit described. Assume that q(0) = 0 and q'(0) = 0 R = 20, C = 0.02, L = 2, E(t)=35 q"+R/L q'+1/LC q=1/L E(t) where R is resistance (in Ohms), C is capacitance (in Farads)
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