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The switch has been open for along time .at t=0the switch is closed .find the differential equation for capacitor voltage and initial condition vc(0). find vo(t) using laplace transformation for vs(t)=25u(t)v.
A 75 ohms lossless air transmission line at 3 GHz is terminated in a load of (300-j400) (a) What is the load reflection coecient (b) Determine the impedance at 2.5 cm, 5.0 cm, 7.5 cm and 10 cm from the load.
For a PMAC (permanent-magnet ac) machine, what would happen if the supplied frequency is not same with the rotating frequency of the rotor
Explain the structure and nature of the ionosphere with reference to daily, seasonal and long-term changes and explain the modes of propagation of radio waves of different frequencies
a discrete memoryless source has a symbol alphabet of a 10. determine the upper and lower bounds on its
Draw an accurate phasor diagram of the four voltages from the R-L-Ccircuit. Derive three expressions for the phase angle between Vsand Vr from the phasor diagram.
Are these signals periodic, find their fundamental period T and their fundamental frequency, otherwise prove that they are non-periodic 1) x(t)= 4 cos(12 t+40) + sin(16 t) 2) x(t)=cos4t +3e-j12t
After the user enters the words, the program will determine which words would come first and last if the words were listed in dictionary order. The program must stop accepting input when the user enters a four letter word. Assume that no word is m..
Shunt capacitors are installed at the receiving end to improve the line performance. The line delivers 70 MVA, 0.8 lagging power factor at 64 kV. Determine the total Mvar and the capacitance per phase of the Y-connected capacitors.
The PCI bus found in many computers transmits 64 bits per clock cycle at 33MHz. How does the bandwidth of the PCI bus compare to the serial FireWire (IEEE 1394) serial bus specification, which is 400 Mbits per second
Design a Mealy circuit has two inputs, X and Y, and two outputs, Z and W. If the two inputs are 0 at the previous clock rising-edge and then 1 at the next clock rising-edge, then an output Z = 1 (else Z = 0). If one of the inputs is set to 1 and t..
A single-phase, 100-kVA, 1000:100-V, 60-Hz transformer has the following test results: Open-circuit test (FIV side open): 100 V, 6 A, 400 W Short-circuit test (LV side shorted): 50 V, 100 A, 1800 W 1)Determine the voltage regulation at 75% of the rat..
What is the current if the voltage source is reduced to 80% of the original value. Will the current increase or decrease and by how many percent if the total resistance of the circuit is 10% of its original value.
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