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Assume a voltage source supplies an AC voltage of amplitude V(o) between its output terminals. If the output terminals are connected to an external circuit, and an ac current of amplitude I(o) flows out of the terminals then the equivalent resistance of the external circuit is R(eq) = V(o) / I(o).
If a transformer with N(p) and N(s) turns in its primary and secondary, respectively, is placed between the source and the resistor (primary facing voltage source, secondary facing resistor), what is R(eq)?
which semiconductor device and circuit technologies made the wide spread of mobile communications possible How modern electronics technology affects positively and negatively your personal life, the work environment and the global society
The lighting and motor loads of a small factory establish a 10kVA power demand at 0.7 lagging power factor on a 208V, 60 Hz supply. Determine the power-factor capacitor that must be placed in parallel
A processor has a 32 MB cache and a 64 bit data bus. What is the minimum width of the address bus needed to access the entire cache
1 kW heating element of a 230 V, 50 Hz electric stove is to be controlled by a triac circuit. The gate circuit of the triac uses a 0.2 mF capacitor and a diac with a break over voltage of 50 V. Calculate the adjustable resistance value to provide ..
The steering wheel has backlash. This means there is a delay between the time the wheel is turned, and the time the car responds. The driver tends to overturn, which leads to instability and lack of control of the car.
design a multirange ammeter with ranges of 1-10mA,0-100mA, and 0-1500mA, using a 5mA movement whose internal resistance is 3.8ohms. draw a circuit diagram of the meter.
Assume that the size of each track is the same. Compute the size of each cylinder on the disk both in terms of the number of bytes and the number of blocks. Also, compute the size of each track.
Given N-type silicon sample with uniform donor doping of (a) Nd= 1018/cm3 , (b) Nd= 1019/ cm3 and (c) Nd= 106/cm3, calculate the Fermi levels at room temperature assuming full ionization for all cases.
A 50 kW load operates from a 60 Hz 10 kV rms line with a power factor of 60% lagging. Determine the capacitance that must be placed in parallel with the load to achieve a 90% lagging power factor.
Starting from the appropriate Maxwell's equation determine the relationship between tangential components of the electric fields on either side of a boundary separating two dielectric meddia with dielectric permittivity e1 and e2 .
A string of Christmas tree lights consists of ten (2W, 11V) bulbs connected in parallel. a) What current flows in each bulb b) What is the resistance of each bulb
In the positiveVGs region, does the drain current increase at asignificantly higher rate than for negative value Does the ID curve become more and more vertical with increasingpositive value of VGs. Is there a linear or a nonlinear relationship be..
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