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a) A capacitive sensor consists of two plates in air. The plates are 50 mm square and are separated by a distance of 1.2 mm. A sheet of a dielectric material of 50 mm square and 1 mm thick can slide between the plates. If the dielectric is displaced so that 50% of it is between the capacitor plates, determine the capacitance of the sensor. (The relative permmitivities of the dielectric material and air are 5 and 1 respectively)
f(t) = A[u(t) + u(-t/2-5)-1], where u(t) is the unit step function. Is the energy of this signal finite? Why or why not. If it exists, find the energy of this si
An infinitely long wire is placed in a space with relative permeability of 9000 carrying current of 1.9 A in the +y direction. What is the magnitude of the magnetic flux density at (0.03,0,0) [meters] in units of Tesla
If an AM signal has an un-modulated carrier voltage Vc=A volts(pk) and a load resistance RL of B ohms. How to calculate the Pc (Carrier Power) If the modulation index is known as m, how to calculate the Sideband Power (Psb)
An inverter has a measured delay of 2ns. If five identicalinverters are connected in series, where the the first one isconnected to the last inverter, such that the voltage at the firstinverter will be an oscillate like a clock.
Suppose that we design an inverting amplifier using 5-percent-tolerance resistors and an ideal op amp. The nominal amplifier gain is -2.What are the minimum and maximum gains possible, assuming that the resistances are within the stated tolerance?..
The input to the filter is Vin(t)=5+5cos(1000pi*t)+sin(20000pi*t)+4cos(3000pi*t) V and the output is Vout(t)=5+5cos(1000pi*t+10deg)+5sin(3000pi*t) V.
Consider a CMOS inverter fabricated in a 0.25-μm CMOS process for which VDD = 2.5 V, Vtn-Vtp = 0.5 V, and μnCox = 3.5μpCox = 115 μA/V2. In addition, QN and QP have L = 0.25 μm, and (W/L)n = 1.5.
A solar pond consists of a thin layer of fresh water floating on top of a denser layer of salt water. When the salty layer absorbs sunlight it warms up and much of that heat is held there by the insulating effect of the fresh water above it
Find the equivalent resistance of the series combination of resistors. Also find VT, V1 and V2. Find the equivalent resistance of the parallel combination of resistors. Also find IT, I1 and I2.
A speech signal with bandwidth B= 10 Khz is sampled at F2 = 20 KHz. Suppose that the signal is corrupted by four sinusoids with frequencies. F1 = 10,000 Hz ,F2 = 8889 Hz, F3 = 7778 Hz , F4 = 6667 Hz
A technician needs to interface a 7400 device which acts a driver with a load of a 4000 series logic device. Suggest a practical approach to interface the two devices correctly.
Assume the system shown in the Fig. is balanced, Rw = 0, Van = 208 angle 0 degree V, and positive phase sequence applies. calculate all phase and line currents, and all phase and line voltages, if Zp is equal to a) 1K ohms b) 100 + j48 ohm
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