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Question 1:
A 1000-pF capacitor, a 1-mH inductor, and a current source of 2 cos 106t mA are in series. The capacitor voltage is zero at t = 0. Find the energy stored (a) in the inductor at t = 0; (b) in the capacitor at t = 1.571 μs; (c) in both inductor and capacitor together at t = 1 μs.
Question 2:
A 5-pf capacitor (C = 5 x 10-6) has an initial voltage of Vo volts at t = 0 when the current waveform shown is applied.
(a) Find vc(t) for Vo = 0
Assuming a bandwidth of 2 MHz, find the rms noise voltage across the output terminals of the circuit shown in Figure A.9 if it is at a temperature of 400 K.
What percentage change in the voltage gain with feedback would be produced by a 50 per cent change in the voltage gain of the basic amplifier due to a change in the load? The loading effect of the feedback network can be neglected.
What fraction of the total rate of U.S. electricity production in 1980 does 2.67 x 10^8 W correspond to? Here are some facts that go along with the problem
i- A 3-element uniform linear array with inter-element spacing of λ/2 is operated as a broadside array ,find the directions of null radiation , find the direction and the relative level of the side lobe. ii- if the peak radiation is to rotate by 30..
Find the equivalent winding resistance, reactance and impedance referred to the HV and LV sides. Convert these to pu values.
An AC model of a cascode common-source amplifier is shown below. M1 and M2 are biased in saturation mode. The parasitic capacitors in the transistors are included. Determine the poles in frequency response at node A, X, and Y respectively.
When a system has permanent part and a removablepart(such as a CD-Rom and a CD-Rom), it is important that thesystem be standardized, so that different companies can make boththe permanent and removable parts and every thing still works together.
An RC circuit with a time constant T = 30 msec has reached a steady state of 2 V at time t = 0. The circuit is then suddenly switched to ground (0 V). Calculate the time required for the voltage to fall to 1 V.
NA (x) = 10^14 + 10^18exp(-10^4x), where x is measuredin cm. Use Eq. to demonstrate that the material must have a nonzero internal electric field E. What is the value of E at x=0 and x =5μm
(a) Find Cox and (b) For an NMOS transistor with W/L = 15 m/0.25 m, calculate the values of VOV , VGS, and VDSmin needed to operate the transistor in the saturation region with a dc current ID= 0.8mA.
A spherical cavity of radius α is made within a uniformly charged sphere of radius b, the center of the cavity being at a distance c from the center of the sphere. Find the electric field associated with this charge distribution for all points of ..
In RCL circuit connect with A.C. voltage, Inductor and capacitor increase thier voltage. For example Circuit connect with 230 V A.C. Voltage and frequency 4.96Hz. Inductor and capacitor's Vrms value become 1400V.
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