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50 kmol per hour of air is compressed from p1 = 1.2 bar to P2 = 6.0 bar in a steady-flow compressor. Delivered mechanical power is 98.8KW. Temperature and velocities are: T1= 300K T2= 520K u1= 10m s^-1 u2= 3.5m s^-1 Estimate the rate of heat transfer from the compressor. Assume for air that Cp = 7/2 R and that enthalpy is independent of pressure.
What is the conversion efficiency of an amplifier in which the effective value of the current through a 2.2-k? load is 5 mA and the drain on the 18-V dc supply is 3.8 mA
First draw the transmit con-stellation and the receive constellation with ideal phase tracking and sampling. Note:they are obviously the same constellations. Now, assume that receiver synchronization is off by a phase angle.
An unknown semiconductor has a bandgap of 1.1eV and Nc = Nv. It is doped with 10^15 cm-3 donors where the donors fully ionized. Given that EF is 0.25 eV below Ec, calculate the concentration of electrons and holes in the semiconductor at 300 K and..
Discuss the differences between series and parallel circuits. What are some advantages and disadvantages of each type Discuss why the total power equals the sum of the individual values of power, whether a series circuit or a parallel circuit is u..
A series-parallel circuit contains both series and parallel connections in different arrangements. Do you find it useful to isolate the parallel sections and calculate their resistance first
A 150MW alternator generates an open-circut line-t0-line voltage of 12kV at nomial DC excitiation. When the terminals are placed in short-circuit the resulting current per phase is 8000A.
Consider an LTI system with impusle response h(t) = e^(-.2t)*(u(t-1)-u(tt-8)) a) plot h(t - tau) for various values, make sure you show how the parameter t influences the position of the curve in the graph. b)Find the output y when the input is x(t) ..
A class C amplifier severely distorts the signal. How can we use a resonant tuned filter to get the desired signal at the output What type of transistor (BJT or FET) would you like to use at the front end (first amplifier) of a receiver
3)What factors started the decline in the nuclear power industry, and what events essentially ended new construction of nuclear power plant 4)What are three advantages of using AC power over using DC power
Evaluate the size of the solar PV system and Sizing a Solar PV System - What is their monthly average energy use?
Find a possible series RL circuit equivalent to N.
What sort of waveform does the input signal have? Is the input signal periodic or non-periodic? If the input waveform is non-periodic, what is its pulse width?
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