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A circular ring of charge of radius a lies in the x-y plane and iscentered at the origin. If the ring is in air and carries a uniformdensity ρl show that the electric potential at(0,0,z) is given by V = ρl a / [2ε0(a2+z2)1/2 ]
Design an excess-2 code converter to drive a seven-segment indicator . the four inputs to the conducter circuit is (A,B,C, andd) represent it in Excess-2 code decimal digit. the inputs aredigits 0-9, so the six unused combinations are dont cares.
which electrical meters are self-powered from an internal source such as a battery, and which meters draw their power frm the circuit to which they are attached
What is the difference between multiplexing and multiple access?
a) Draw a sketch of the spectrum of x(t) = sin3(400πt) Label the frequencies and complex amplitudes of each component. Determine the minimum sampling rate that can be used to sample x(t) without aliasing for any its components.
Suppose that the number of customers entering a department store in a day is a random variable with mean of 50 customers/day. Suppose that the amounts of money spent by each one of these customers are statistically independent.
A clock signal of 100 MHz (10^8 Hz) is available. Design a circuit that generates a sec- ond clock signal of 12.5 MHz. Design a 3-bit binary counter and the most significant bit is the desired clock signal.
A 50-KVA, 13,800/208 V -Y distribution transformer has an equivalent phase impedance 114.2+j800 ohm referred to the high voltage side. Take the rated voltage as the base voltage and the rated VA as the based voltampere value.
Design a RC phase shift oscillator that makes a pure sine wave (no clipping or other distortions) at a frequency of 10 kHz. Output voltage should be 9 V pp. Design a differential amplifier with Icq = 0.5 mA in each BJT and Difference mode gain = 40..
(1) Explain what happens in a series circuit when the frequency makes Xc equal to XL. Does it have a name (2) What is the relationship between Ic and IL at Is minimum (3) Why is the source current, Is, minimum at certain frequency
A power supply, when connected to a radio, provides 5V to the radio. When connected to a lamp, it provides 4V to the lamp. Assume the radio can be modeled as 6ohm resistor and the lamp can be modeled as a 0.7ohm resistor.
In the He Ne laser, an energetic electron is accelerated by the applied field impacts and excites the He from it's ground state 1s2, to an excited H*, 1s12s1, which has one of the electrons in the 2s orbital.
A Polyester capacitor with a leakage specification of 5x109 O -µ F is used in a circuit. The voltage across this capacitor is 100 volts D.C. and the capacitance is 0.1µ F find the leakage current.
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