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A solar thermal plant with energy storage capability is to be constructed at about a 40° latitudeto provide the electric energy to a system whose 24-hr average load is 100 MWe during the winter.Assume that the solar thermal power plant will have a 25% energy conversion efficiency; that thenighttime load is 40% of the total load; and that 10% of the energy that must be stored is lost. (a)Determine the total land area (in km2) required for the reflectors (heliostats). (b) For comparisonalso determine the area (in km2) required for a fixed horizontal system. In both cases, it is believedthat a parabolic reflector system can be set up so that the reflectors cover 45% of the land area onwhich they are placed. The reflected energy collected at 40° latitude in winter is 6 kW·hr/m2·dayfor a tracking system, and only 1.85 kW·hr/m2·day for a horizontal fixed system.
It is used in a quarter Wheatstone bridge with three other fixed 100 W resistors. If the strain gauge constant is 2.0, find the output voltage when the input voltage to the bridge is 10 Volts and the strain is 500 microstrain.
Two ammeters are put in parallel, and used to measure an unknown current. The unknown current is determined by adding the readings of the two ammeters. Ammeter #1 can read a maximum current of 50[A], and has a meter resistance of 2.35ohms.
Draw the state diagram for a sequence that detects the sequence 0101 using a minimal number of states. The detector should also detect overlapping sequences. Design the circuit using D flip-flops. Draw the logic diagram.
Suppose a drift current density of 2000 A/cm^2 exists in the neutral region on the n-type side of the diode that has a relationship of 0.5 Cm. What is the electric field needed to support this drift current density
The problem has two parts(a and b) and it asks: Find the power and rms value of each of the following signals: a) x(t) = 5 + Ccos(ωot+θ) b) x(t) = 2+7cos(1/2t+θ1)+3cos(2/3t+θ2)+5cos(6t+θ3)
Calculate the average power of this periodic signal. Find thediscrete Fourier series for x[n]. Calculate the average power from the cofficients ak A periodic signal x[n] has period N = 2. One period of x[n]
determine the displacement noise of the sensor with the electrodes at a position midway between maximum andminimum separation if the output signal is filtered to provide bandwidth of 10, 100, and 1000 Hz
by using the laplace transform compute the convolution xtvt of the two signals where xte-tut and vtsin
Assuming that solar energy is used to charge a storage battery which then in turn is to power a lamp of 40W. Solar cell obtains power at the rate of 100milliwatts per square centimeter, and the sunlight time is 12 hours.
Consider a 1-D semiconductor system when we have a perfect balence of drift and diffusion of holes. that is the total Jp=Jp, diffusion +Jp, drift = 0. P(x=x1)=p1, P(x=x2)=p2. find the potential drop from x2 to x1 in terms of p1 and p2
A candidate material for a turbine blade application oxidizes by diffusion of metal atoms through the oxide to the metal surface, where metal and oxygen react to form the oxide. After 10 hours at 550*C, an oxide layer 8µm thick has formed.
Water is the working fluid in an ideal Rankine cycle. Superheated vapor enters the turbine at 10 MPa, 4808C, and the condenser pressure is 6 kPa. Determine for the cycle the rate of heat transfer to the working fluid passing through the steam generat..
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