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1. Why is a cooler shell and suction line insulated on a unit that is located indoors?
2. Explain the operation of lead and lag compressors.
3. How can the centrifugal compressor speed be higher than the motor speed?
Signal w(t) is input to the filter. This signal is white noise, with PSD = N0/2. If we denote the filter output as n(t), what is the power in n(t) We input v(t) + w(t) into the filter, where v(t) = Ac cos(2pif0t). If Ac=4, what is the output signal..
a. Draw the block diagram for a coherent receiver for QPSK using the same basis signals as in problems ("What frequency must be used for basis symbols f1 = sin(pi*ct) and f2 = cos(pi*ct) with a symbol period of 1/(9600Hz) to contain 6 cycles of th..
a). Determine the power this amplifier will deliver to a 4 ohm load, to an 8-ohm load, and to a 1K-ohm load b). What would be the open-circuitvoltage of the amplifier if the signal level were increased
A gas burner is noisy and the flames are lifting off the burner. What is the most likely cause?
Design a synchronous sequential circuit to control the operation of an automatic coffee machine. A cup of coffee costs 15cents and the machine has two input slots. In one slot Only 10cent coins can be inserted , in the the other only 5cent coins.
(a) Find the slip at the maximum developed torque. (b) If we would like to get the maximum torque at starting (s=1), a method is to add more resistance to the rotor, R2,new=R2,old + Rextra, while the rotor reactance X2 stays the same.
A full wave center-tapped transformer rectifier ina power supply provides an average dc output voltage of 14V onwhich a maximum ripple of ±0.5 volt is allowed. Diodeshave a 0.7 Volt drop when conducting. Assuming a resistive load of120 ohm
A voltage source 100(angle 0 degrees) is in series with a 200 ohm resistor and a cpacitive reactance of -100 ohms. a) What impedance,Zl, in parallel with the capcitor would absorb maximum AVERAGE power
A speaker can be modeled as an inductor LS (the coil that generates the magnetic field to move the speaker diaphragm) in series with a resistor RS (resistance associated with the coil wire, as well as the energy lost to the acoustic output the spe..
A 4-bit adder will be used to add a 3-bit unsigned number (0-7) and a 2-bit unsigned number (0-3), producing a 4-bit result. Design a combinational circuit with a complete truth table, K-maps and circuit diagrams using multiplexers and discrete lo..
(a) Calculate the velocity of the holes and electrons in this material. (b) What doping level is necessary to provide a current density of 2 mA/micrometer^2 under these conditions? Assume the hole current is negligible.
explain the dilation, erosion, closing, and opening operations on a binary image B with a structured element S. ( you need to use the symbolic notion for the operators, but need not provide the precise mathematical definitions
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