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Design the electrical system for a shopping center with 500,000 square feet at least 30 spaces of three different sizes (5,000, 10,000 and 25,000 sf). They may be offices, banks, restaurants and shops. They must design the electrical distribution system and interior lighting for each of the three types (including fixtures, receptacles, branch sizes and feeders, substations, protection, and grounding systems, short circuit study, and voltage drop ).To the mall should design the electrical distribution system (including power supplies for system sizes of central A / C water heaters and other equipment areas, size and feeder substation, protection, and grounding systems; study short circuit, and drop in voltage). Use the most appropriate voltages in each case.Draw diagrams monoline and plants with all notes, details and schedules as it deems necessary panels. Provide evidence of your computations short circuit and voltage drop for each case.
Assuming that ideal filters are available, what is the lowest frequency at which the signal can be sampled and subsequently recovered in its analog form without distortion using a low pass filter?
An abrupt silicon pn junction at zero bias has dopant concentrations of Na = 1017/cm3 and Nd = 5 x 1015 cm-3 at T = 300K. (a) Calculate the Fermi level on each side of the junction with respect to the intrinsic Fermi level.
The river estuary is tidal causing the surface level of the water to rise and fall. At certain times of day, reflections from the water surface cause deep fading of the received signal.
What do you believe would happen, if you removed the 220 ohm resistor from the circuit and connected the LED directly to the 555 integrated circuit. Are there any appreciable differences between labeled, calculated.
The bellows, diaphragm, and Bourdon tube pressure sensors all exhibit second order time response. This means that a sudden change in pressure will cause an oscillation in the displacement and, therefore in the sensor output.
Three towns A, B & C are situated at the corners of an equivalent triangle of side 30 km. It is proposed to supply power to extent of 30 MW, 10 MW, 20 MW to A, B & C respectively from one substation. Where should substation be located to minimize ..
Two points are given in Cartesian coordinates as P1 (0,0,1) and P2 (2,1,,3). vector A connects p1 (tail) to p2 [head). Find the unit vector in the direction of A in spherical and cylindrical coordinates.
The line is terminated in a load RL = 25 ohm. Use the bounce diagram to plot V(t) at a point midway along the length of the line from t = 0 to t = 25 ns.
A heat engine operating in outer space may be assumed equivalent to a Carnot engine operating between reservoirs at temperatures TH and Tc The only way heat can be discarded from the engine is by radiation
1) What are some practical op-amp applications Can you give example and explain why the bop-amp was used in your example 2) What is the most common used op-amp in the industry
A filter with a great deal of attenuation must be placed in an amplifier chain. Ignoring all considerations other than the desire to minimize noise figure, would it be preferable to put the filter before or after a low noise amplifier Why
Calculate current flow and describe its probable path. Will the breaker likely be tripped? Is there a risk of electrocution? If so what factors contribute to the risk?
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