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A. Consider a step-down transformer with 15 turns in the primary and 6 turns in the secondary windings.Calculate the input impedance of this transformer loaded to an 8 O resistor, assuming that series resistances of the windings are negligible.
B. A signal generator with an internal impedance of 50 O provides an open circuit voltage of 2 V. Find the voltage drop across a 50 ohm load connected to the generator. Repeat the calculations for an 8 O load. Find the electrical power delivered to the load in both cases.
C. Consider the generator from part B connected to a primary of the transformer from part A. The secondary is loaded to the same 8 ohm resistor. Find the voltage drop across the primary.
What RF bandwidth must the radio link provide if the modulation is binary phase shift keying (BPSK)?
The pre- Limiter circuitry has a Noise Figure of 8dB and an input Noise Temperature of 1800C. Given an FM demodulation noise improvement of 17dB, determine the minimum receive signal power to achieve a post detection signal to noise ratio of 35dB.
For each of the following functions find the values of S & Wn (omega n) and characterize nature of response (overdamped,underdamped,critical damped,etc) a) G(s)= 225/ s^2 +30s+225 b) G(s)= 625/ s^2 +625
A 3-phase, 11 kV, round-rotor synchronous generator delivers power to an infinite bus whose line-to-line voltage is constant at 11 kV rms. The effective stator resistance and synchronous reactance per phase of the synchronous generator are respectiv..
a low pass first order instrument has a time constant of 20ms. Find frequency in hz of the input at which the output is 93% of dc output. Find phase angle.
A Thevenin equivalent can also be determined from measurements made at the pair of terminals of interest. Assume the following measurements were made at the two external terminals a, b of a circuit.
(a) How much work is done by the electric field due to the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.38 cm from the sheet b) If the electric potential V is defined to be zero on the she..
One system has a cpu a tdp of 125w and one has a 67w tdp. 125W System has 10 times bigger copper heatsink and blows 3 times more volume of air than the system of 67w. The 125w system reads 55C max CPU core temperature.
consider an ideal amplifire with inverse feedback. explain what is meant by a virtual ground for both inverting and non-inverting connections
A core-type transformer rated at 37.5 kVA, 2400/480 V, and 60 Hz has a core whose mean length is 1.07 m and whose cross-sectional area is 95 cm^2. The application of rated voltage causes a magnetic field intensity of 352 A-t/m (rms)
A 1(lambda) wavelength long line has parameter R=0.2 Ohm/m, G=0.002 mho/m, L=15 muH/m and C=2.31pF/m. The line is operated at a frequency f=2.5 GHz. It is terminated with a load impedance of 100 Ohms.
What is the purpose of a state diagram, and what information can we derive from it. What is the major differences between an asynchronous counter/divider and a synchronous one.
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