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A photocell with a 35-ms time constant is used to measure light flashes. How long after a sudden dark-to-light flash before the cell output is 80% of the final level?
The excess charge in a certain medium decreases to one-third its initial value in 20s. (a) If the conductivity of the medium is10^(4)S/m, what is the dielectric constant of the medium(b) What is the relaxation time
A rectangular pulse v(t) has a magnitude of 1.0 volts and duration 5 μs. The pulse is multiplied by a sine wave x(t) at a frequency of 2.0 MHz. a. Write down an expression for the spectrum of the signal y(t) = x(t) x v(t).
If a patient is on a drip with a drip rate of f(t) = 150e^0.0167t mL/hr, calculate the amount of substance transferred into the patient over a time period of 10 hours, use time intervals of 1 hour. Compare
Memory storage and bit density, A hard disk contains four Platters. Each side of the platter is coated with a magnetic oxide, allowing data to be stored on it. The platters are 3.5 inches in diameter.
If V = 12sin( 2 pi 1800 + 45). What would you read on a DMM Would this voltage be for an inductor or capacitor What would be the frequency and phase What does the 12 stand for Explain.
An overhead line with an inductance of 1.33 mH/km and capacitance of 8.34 nF/km is connected to an underground cable with an inductance of 0.266 mH/km and capacitance of 166 nF/km.
A 3-phase, 2300 V, 60 Hz, 12-pole, Y-connected synchronous motor has 4.5 ? per phase synchronous reactance and negligible stator winding resistance. The motor is connected to an infinite bus and draws 250 A at 0.8 power factor lagging.
A computer has 16-bit instructions and 64 registers. Suppose it is required to have at least 14 instructions designed to have 2 operands from registers (e.g., add, $1, $3 puts the sum of $1 and $3 into $1.
determine the following by sloving laplace equations: a) the potential and electric field distribution in the dilectric slab. b) the potential and electric feild distrivution in the air space between the dilectric slab and the upper plate and c) t..
explain the function of frequency dial and frequency range.
150 kVA, 2400/240 V single-phase transformer has the parameters. (a) Determine the equivalent circuit referred to the high-voltage side. (b) Find the primary voltage and voltage regulation when transformer is operating
Laplace transform of a pulse, Consider computing the Laplace transform of a pulse: use the integral formula to find P(s)
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