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Situation You are the manager of a large warehouse that is required to be operational 24 hours a day. The electrical distribution system for the warehouse supplies power to various electrical loads such as lighting, heating, air conditioning, various motors, and miscellaneous office components. Your monthly electrical costs are calculated based on the apparent power your warehouse is consuming. Corporate management has directed you to reduce your total power consumption by 15-20% while still maintaining the warehouse operational 24 hours a day. Assume all non-essential electrical loads have been secured and the remaining electrical loads are required to be operating 24 hours a day. What are some of the measures you can take to reduce the overall warehouse power consumption? Can 100% efficiency ever be achieved in a sinusoidal power system? Support the answer using power factor in sinusoidal power systems.
A capacitor is used in the electronic flash unit of a camera. A small battery with a constant voltage of 6 V is used to charge the capacitor with a constant current of 10 microamperes. How long does it take to charge the capacitor
Calculate: a. The rated primary and secondary currents b. The secondary voltage if it is connected at full load of 2000 kW c. The voltage regulation from no-load to full load. Voltage regulation is given by: (E(no-load)-E (full-load))/E(full-load)..
When a 0.900kg mass oscillates on an ideal spring, the frequency is 1.49Hz . A)What will the frequency be if 0.300kg are added to the original mass. Try to solve this problem without finding the force constant of the spring.
a) Calculate the wind force on the turbine for a 5 mph wind. b) What is the force if the wind speed is tripled? c) Calculate the torque on the tower for the cases of the 5 and 15 mph wind velocities
An unpolarized beam of light is sent into a stack of four polarizing sheets, oriented so that the angle between the polarizing directions of adjacent sheets is 50 degrees. What fraction of the incident intensity is transmitted by the system
Design a low pass active filter that passes frequencies at 900 Hz and below and at these values the magnitude (in dB) of the transfer function is between 23 dB and 17 dB. The circuit's magnitude (in dB) of the transfer function at a frequency of 1..
Two infinitely long coaxial cylindrical surfaces, r = a and r= b (b > a), carry surface charge densities Dsa and Dsb,respectively. (a) Determine the electric field intensity everywhere. (b) What must be the relation between a and b in order that Eva..
design a LUT to implement an adder. The adder takes as input two 2-bit numbers. (a) What is the minimum size ROM that will be required. (b) What data is stored in each memory location in this ROM.
consider the (100),(110), and (111) planes in silicon. (a) which plane has the highest surface density of atoms. what is that density. (b) which plane has the smallest surface density of atoms. what is that density.
When the circuit is redrawn why does the capacitor move to be in parallel with the resistor when it is originally in series with the resistor
An AM modulator is operation with an index of 0.4. The modulation input is m(t) = 4 cos(3πfmt) + 2 cos(5πfmt) + 4 cos(7πfmt) (a) Sketch the spectrum of the modulator ouput showing the weights of all impulse functions.
Look at the resistor illustrated. Based on your knowledge of the resistor color code, what are the resistance value and tolerance of this resistor?
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