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A combined-cycle, natural-gas, power plant has an efficiency of 52%. Natural gas has an energy density of 55,340 kJ/kg and about 77% of the fuel is carbon.a. What is the heat rate of this plant expressed as kJ/kWh and Btu/kWh?
b. Find the emission rate of carbon (kgC/kWh) and carbon dioxide (kgCO2/kWh).
The sinusodial modulating wave m(t) = (Am)cos(2*pi*fm*t) is applied to a phase modulator with sensitivity kp. The unmodulated carrier wave has frequency fc and amplitude Ac. Determine the spectrum of the resulting phase-modulated wave
The surface of the sun has a temperature of 6000 K. Calculate the wavelength at which the sun emits its peak radiancy.
Suppose that data are stored on a 1.4-Mbyte floppy diskettes that weight 30 g each. Suppose that an airliner carries 10,000 kg of those floppies at a speed of 1000 km/h over a distance of 5000 km. What is the data transmission rate in bits per sec..
What is the PIV required of the diode? A half-wave rectifier employing a 12-V-rms 60-Hz sine-wave source and no dc load is filtered using a polarized electrolytic capacitor having a small leakage current.
1- Find the voltage across the inductor for t > 0 2- Sketch the voltage and the current as a function of time 3- Find the power ( in microwatts) at the terminals of the inductor when t = 200 ms
A 50V DC source is connected in series with a switch, an 8.2k ohm resistor, and a 0.01 microfarad capacitor. There is no initial charge on the capacitor and the switch is open. Determine both A & B The time at which the capacitor is fully charged
Finding values of a composite discrete time signal, A discrete time signal x(n) = x(n-1) + x(n-3) with initial conditions x(0) = 0, x(1) = 1 and x(2) = 2 is examined and the first 51
A 60 kVA, three-phase, wye-connected, 440 V, 60 Hz synchronous generator has a resistance of 0.15ohm and a synchronous reactance of 3.5ohm per phase. At rated load and unity power factor, calculate the percent voltage regulation.
What annual revenue is required to cover fixed costs? What will be the annual variable costs? How much will electricity cost per kWh?
find a minimal two-level NAND realization for each of the following switching functions. a) f(A,B,C) = sum m(0,2,3,7) b) f(A,B,C,D) = sum m(0,2,8,10,14,15) c) f(A,B,C,D,E) = sum m(4,5,6,7,25,27,29,31)
The open circuit test on a single-phase 15kVA, 7500/480 V, 60 Hz distribution transformer yielded the following: V = 7500V; I = 0.2006A; P = 180W Calculate the core parameters RC and XM and the magnetizing current IM.
A certain engine lathe can be purchased for $330,000 and depreciated over three years to a zero salvage value with the SL method. This machine will produce metal parts that will generate revenues of $220,000 (time zero dollars) per year.
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