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An arrangement for direct conversion of thermal energy to electrical power is shown. The inner cylinder of diameter Di = 25 mm is heated internally by a combustion process that brings the ceramic cylinder (ei = 0.9) to a surface temperature of Ti = 1675°C. The outer cylinder of diameter Do = 0.38 m consists of a semiconductor material (e o = 0.5) that converts absorbed incident irradiation to electrical current; the backing material for the semiconductor is a highly conducting metal that is water cooled to 20°C. The converter is assumed to be very long compared to the outer diameter. The space between the two concentric cylinders is evacuated. Assuming diffuse, gray surfaces, determine the heat transfer rate per unit area of the outer cylinder. The electrical output of the semiconductor surface is 10% of the absorbed irradiation in the wavelength region 0.6 to 2.0µm. For the prescribed conditions, determine the power generation in watts per unit of outer surface area.
A 64K x 16 RAM chip uses coincident decoding by splitting theinternal decoder into row select and column select. (a) Assumingthat the RAM cell array is square, what is the size of eachdecoder, and how many AND gates are required for decoding an ad..
A photovoltaic cell is to be used with radiation of intensity from 2 to 15mW/cm2. If an optical source with a radius of 0.1cm is 200m away from the sensor, find the maximum power if the divergence is 1.2 x 10-3 rad.
describe the operation of the series rc circuit. the discussion must address phase angle relationships of current and
a series of combination having r2mohm and c0.01 uf is connected across a d.c. voltage source of 50v. determined
A cylindrical brass sleeve is to be shrink-fitted over a brass shaft whose diameter is 3.216 cm at 0°C. The diameter of the sleeve is 3.203 cm at 0°C. (a) To what temperature must the sleeve be heated before it will slip over the shaft
I started writing a program and need help. I need to be able to enter up to 15 numbers and output the minimum number, maximum number and the geometric mean.
5eV for metal work function, 4.05eV for semiconductor electroaffinity, effective density of states for conduction band is 1019cm3, n-type doping density is 1015cm3, semiconductor dielectric constant is 11.8. (a) draw its energy band diagram with ..
Suppose a car is traveling at +23.2 m/s, and the driver sees a traffic light turn red. After 0.563 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 7.00 m/s2. What is the stopping distance of the car
Modulating Radio Frequency Carriers to Carry Digital Data, Digital radio transmission requires the use of a carrier wave which is modulated by the digital data.
Design a logic circuit to control electrical power to the engine ignition of a speed boat. Logic output I is to becomehigh if ignition power is to be applied and is to remain lowotherwise. Gasoline fumes in the engine compartment present aserious ..
If 2*10^15 gold atoms per cm^3 are added to intrinsic silicon as a substitutional impurity and are distributed uniformly throughout the semiconductor, determine the distance between gold atoms in terms of silicon lattice constant.
kindly show me full and clear steps how you will sketch and how you get the final results. ltbrgt ltbrgtand send me
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