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You've just been hired as a process engineer at a major silicon chip manufacturer and your boss gives you a first task. You are to research the best option for measuring, monitoring and maintaining the temperature of a vertical oxidation furnace made of quartz which will handle 100, 450 mm diameter wafers spaced 0.25" apart. The central zone is to maintain a temperature of 1000 °C. The key priorities in reaching your goal are:
Obtain three designs and specify which is your optimum choice and why, also listing all of your assumptions.
Two identical 138 kV Y: 13.8 kV DELTA 100 MVA tap changing transformer each with a per unit series impedance of j.1 ohms are operating in parallel and supplying a 180 MVA load at 13.8 kV and .8 lagging pf.
the magnetic circuit shown with a mean core length of 52 cm and a cross sectional area of 18 cm^2. the length of the air gap is 0.14 cm. Determine the battery voltage required to obtain a flux density of 1.2 T in the air gap. Use the magnetization..
Using only resistors, capacitors and op-amps design a circuit meeting the following criteria: The circuit acts as a band pass filter. The 3dB points arer at 100 and 1000 Hz. The mid-range gain is -1 V/V and the mid-band input resistance is on the ..
If the output of the function generator for a sinusoidal waveform is 6 voltage divisions peak to peak and the voltmeter reads 2.12V, find the volts/div scale that is being used. If the frequency is 1 KHz and the peaks are 5 horizontal divisions ap..
A number of SCRs, each with a rating of 2000V and 50A are to beused in series-parallel combination in a circuit to handle 11KV and400A. For a derating factor of 0.15, calulate the number of SCRs in series and parallel units.
Using bit-slicing technique, design a circuit that calculates the expression 2*a-b. Operands a, and b are each 4 bits long. The result is represented using 5 bits. Show the transistor-level design using dynamic circuits.
In a binary digital communications systems, the bit energy required at the receiver input terminals is 50x10^-18 JOther parameters are as follows: Gt(dB)=24 dB Gr(dB)= 26 dB f= 10GHZ d=40,000 km
a) Using Shannon's expansion theorem, expand F about the variable d. b) Use expansion in (a) to realize the function using two 3-variable LUTs and a 2-to-1 mux. Specify the LUT inputs. c) Give the truth table for each LUT.
A variant of the binary symmetric communication channel described in class is called a binary erasure channel. The transmitter sends a ‘0' or ‘1,' but at the receiver there are three possibilities: a ‘0' or ‘1' or ‘undecided bit..
Assuming no feedback to the adversary until each attempt has been completed, what is the expected time to discover the correct password?
The other end is connected to a box. The box is pulled to the right, stretching the spring. Static friction exists between the box and the table, so when the spring is stretched only by a small amount and the box is released, the box does not move..
Suppose that the type of key in a hashing application you are implementing is String. Design, implement, and test a hash function that converts a key to a hash value. Assume that the size of the hash table is a prime number.
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