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A 250ft^2 shell and tube heat exchanger was purchased fo $13,500 in 1994 when the index value was 830. Estimate the cost of a 150 ft^2 shell and tube heat exchanger in 2010 when the index calue is 1,029 and the appropriate factor is 0.6.
Phase current - Neutral Grounded Assume that the load is star connected with the neutral grounded. Each phase has a series RL load with R = 5 ohms and L = 20 mH. Calculate and plot the Phase a current Ia using Fourier techniques.
Identify the steps involved in the delivery of a letter from the sender to the addressee. How are these steps similar to OSI layers' functions such as addressing, routing, resource sharing, error checking, and connectionless vs. connection-oriente..
A power company supplies 75 kW to an industrial load. The load draws 120 Arms from the transmission line. If the load voltage is 440 Vrms and the load power factor is 0.8 lagging, find the losses in the transmission line.
a signal franging from 1khz to 100khz will be put into a davice that will need amplification that will output to speakers. A 12v battery is available as a power source, however the current out of the battery should be kept to a minimum.
An ordinary broadcast television channel has a bandwidth of 6 MHz. How many FM radio stations (with a bandwidth of 200 kHz each) could be accommodated in one television channel using FDM
Finding values of a composite discrete time signal, A discrete time signal x(n) = x(n-1) + x(n-3) with initial conditions x(0) = 0, x(1) = 1 and x(2) = 2 is examined and the first 51
According to the Merriam-Webster dictionary, an invention is defined as something invented as a product of the imagination such as a device, contrivance, or process originated after study and experiment and an innovation is defined as the introduc..
Design an amplifier circuit which uses an OpAmp and is powered by dual 15 V power supplies, and which has the following characteristic at low frequencies: Vout = 3V1 - 5V2 1. State the information which is extracted from the equation.
(a) Convert the expression for f(x, y, z) = fm(1, 3, 7) from minterm list from to maxterm list form. (b) Convert the expression for f(a, b, c, d) = fM(0, 1, 2, 3, 4, 6, 12) from maxterm list from to minterm list form.
A line has an inductance of1.25mH/km with an impedance angle of 70 degree , and a capacitance to neutral of 0.01mF/km. Calculate its reactance and series impedance per unit length at 50Hz. Calculate the line admittance per unit length
1) Modern technology has produced a small 1.5-volt alkaline battery with a nominal stored energy of 150 joules. For how many days will it power a calulator that draws a 2-mA current 2)The current entering the positive terminal of an element is
A 5-volt intelligence amplitude causes the frequency to change to ± 25 kHz. What will be the carrier frequency variation corresponding to an intelligence amplitude of 10 volts
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