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A 85F capacitor is charged by a constant current source, and its voltage is increased to 6 V in 7 s. Find the value of the constant current source, Is, and the energy stored in the capacitor after 7 s.
The phasor voltage Vab in the circuit is 480 /0° V (rms) when no external load is connected to terminals a,b. When a load having an impedance of 100 j0 Ω is connected across a,b, the value of Vab is 252.9822 /-18.3449° V (rms).
At time t = 0 an electron at the origin is subjected to a force that briefly accelerates it in the +z direction, with an acceleration of 6 × 1017 m/s^2. Before trying to answer the following questions, draw a clear diagram. Location D is 28, 0, 0 ..
Assume R1 = 1 M-ohm, R2 = 3 M-ohm, and C = 1.5 F. Also take the initial voltage across the capacitance to be VC(0) = 4 V. The voltage source VS has a voltage of 9 etV. The switch is closed at time t=0.
A spherical region 0 = r = 2mm contains a uniform volume charge density of .5C/m3. While another region 4 = r = 6mm contains a uniform charge density of -1C/mm3. If the charge density is zero elsewhere, find the electric field E for
y[n + 2]- y[n +1]+ 0.5y[n] = 4x[n +1]+x[n] a. Find the system's transfer function b. Find the system's impulse response c. Find its unit step response when the ICs are y[-2] = 2 and y[-1] = 1.
A diode is connected in series with a 30-V rms source to charge a 12-V battery with an internal resistance of 0.1 ohm. Specify the series resistance necessary to limit the peak current to 2A. Estimate the time required to recharge a 10-A hr batter..
A single-phase 240/120 V transformer has the following parameters: R1 = 1 ohm, R2 = 0.5 ohms, X1 = 6 ohms, X2 = 2 ohms, Ro = 500 ohms & Xo = 1.5k ohms. (a) Load voltage referred to the primary side (b) Currents of the primary and secondary windings
Compare the capacities of the fiber and conducting cables. How many of the conducting cables are required to equal the capacity of the fiber cable.
A sinusoidal current is zero at t = - 625 s and increasing at a rate of 8000 A/s. The maximum amplitude of the current is 20 A. a) What is the frequency of i in radians per second
select a window function to limit the number of samples of an infinite impulse response and the filter specifications are the same, regardless of which window function you select. If you are given the option of using either a Hamming
(1) If the frequency was changed, what would happen to the current in a circuit Explain increase or decrease. (2) If you have R = 2 K ohm, Xc = 3 K ohm, XI = 4 K ohm . Find the G, Bc, BI, Yt anf Zt.
Consider a causal LTI (Linear-time invariant) system described by the following differential equation: \(\frac{d^2}{dt^2}y(t) + 5\frac{d}{dt}y(t) + 6y(t) = \frac{d}{dt}x(t) + x(t)\) a) Determine the transfer function of this system.
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