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1. A 20 μF capacitor is charged to a p.d. of 250 V. Calculate the energy stored.
2. The energy stored by a 400 pF capacitor is 8 μJ. Calculate the p.d. between its plates.
3. Determine the capacitance of a capacitor that stores 4 mJ of energy when charged to a p.d. of 40 V.
Let the current int he circuit be is(t) = u(t -1) and the initial voltage in the cap be Vc(0) = -1 volts. PLOT the voltage in the cap Vc(t) for all times. Suppose we double the current is(t) = 2u(t) - u(t -1) but keep same initial condition
A machine produces photo detectors in pairs. Tests show that the first photo detector is acceptable with probability 3/5. When the first photo detector is acceptable, the second photo detector is acceptable with probability 4/5.
An initially charged capacitance discharges through a resistance. At one time constant, what percentage of the initial voltage remains What percentage of the initial soted energy remains
a) Show how to implement a 4-to-1 multiplexer with an active high output and no enable using two of the 2-to-1 MUXes and a minimum number of additional gates. b) Repeat part (a) for a 4-to-1 multiplexer with an active low output.
use multisim or matlab to calculate the output signal v shown in fig. 3 use eq. 2 for your calculations. consider the
A reactor is fueled with 4 kg uranium enriched to 20 atom-percent in 235 U. The remainder of the fuel is 238 U. The fuel has a mass density of 19.2 g/cm3. What is the mass of 235U in the reactor?
Using the exponential formula for a charging circuit and assuming an initial voltage of zero volts across the capacitor, calculate the voltage across the capacitor at a. t = 1.5 seconds b. t = 2.5 seconds
Assume that H (z) was obtained by the bilinear transform method with Td = 2. Find the system function Hc(s) that could have been the basis for the design. Is your answer unique? If not, find another Hc(s).
Describe how an inductor is practically consumed and what are the problems with practical inductors
The first stage is a common-emitter amplifier and the second stage is a common-collector stage. You should use one npn (2N3904) and one pnp transistor (2N3906) to design the circuit to meet the design criteria. Use the transistor datasheets to fin..
At t = t0, the voltage across a certain capacitance C is zero. A pulse of current flows through the capacitance between t0 and t0 +?t, and the voltage across the capacitance increases to V f . What can you say about the peak amplitude Im and area..
Design an amplifier for a power gain of 15dB at 3 GHz if 1. Plot the input and output constant-Gain circles. 2. Find the input and output matching networks. use L C components.
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