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A 120-V, 60-Hz air conditioner is to be operated in a remote area where the voltage drop in the long transmission line results in a utilization voltage of 102-V. Determine:A) the required step-up voltage ratio for satisfactory performance.B) the voltage ratio of a standard buck-boost transformer that most closely meets the requirements of the load.C) the voltage at the load with the buck-boost transformer installedD) sketch the appropriate connectioon diagram and show the NEMA standard terminal markings.
A phase modulation is used to transmit the signal s(t) = 10cos(20*pi*t) + 5sin(10*pi*t). kp = 3 rad/volts and fc = 20MHz a) What is the instantaneous frequency of the signal b) Write down the expression of the transmitted signal.
Consider the message signal m(t) = 20 cos(2πt) and the carrier signal c(t) = 50 cos(100πt). Write down the AM signal, and sketch the resulting AM signal waveform for 75 percent modulation.
A 3-bit binary counter can be implemented with 3 T-flip-flops and some additional logic. Design the counter. Draw the block diagram (gates) and show the Boolean logic the input into each Flip-flop.
A 230V shunt motor having an armature resistance of 0.05 and a field resistance of 75 draws a line current of 7 A while running light at 1120 rev/min. The line current at a given load is 46 A.
Select f and K so that the steady-state error to a ramp input is less than or equal to 25% of the input magnitude.Determine the percent overshoot for a step input for the design selected in part (b).Use MATLAB to plot y(t) for a step input R(s).
The nameplate on a 50-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of 8.0-kV: 78-kV. An open-circuit test is conducted from the low-voltage side, and the corresponding instrument readings are 8.0kV, 62.1A, and 206kW.
Consider the causal LTI system with system function H(s)=Y(s)/X(s)=1/(s+2)^2 If the input is x(t)=sin(2t) for t>0, find an approximate expression for the response y(t) that is valid for large t.
Show that for wires of identical dimensions but made of different materials, such as copper and aluminum, the resistance is proportional to the resistivity of the material. the resistance of a certain copper wire is 1.5.
Find the absolute potential at a distance h off of the end of the segment. How much work is needed to transport a point charge Q1 from infinity to this location
Efficiency of MOSFET circuit provide in datasheets of any product is measured at transient state of my output node or staedy state?
The core is made of cast steel. Find the MMF required to get an air gap flux of 60,000 lines. The cross sectional area of the center section and air gaps is 4 in^2. The remaining sections have a cross sectional of 6 in^2.
A Si bar is 0.25 cm long and 500 ?m2 in cross-sectional area. It is grounded at x=0 and biased at +20V at x=0.25 cm. Find the resistance and the current at 300K (a) when the Si bar is doped with 2×1017 cm-3 arsenic
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