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Like all companies, Exco has to pay taxes on its profits. However, for each additional dollar in depreciation Exco claims, Exco taxes are reduced bv t, since the depreciation expense offsets income, thus reducing profits subject to tax. Exco is required bv tax law to use declining-balance depreciation to calculate the depreciation of assets on a year-by-year basis, with a depreciation rate of d. This depreciation calculation continues forever, even if the asset is sold or scrapped.
The actual depreciation for a particular asset is best represented as straight-line over y years, with zero salvage value. If the asset costs P dollars, and interest is i, what is the present worth of all tax savings Exco will incur by purchasing the asset? (Hint: The depreciation savings in the first year is Ptd.)
Suppose the unity feedback system of Fig. 5.60 has an open-loop plant given by G(s) = 1=s^2. Design a lead compensation D(s) = K (s + z)/(s+p) to be added in series with the plant so that the dominant poles of the closed-loop system are located at s ..
An air conditioning system is used to maintain a house at 70F when the temperature outside is 90F. If the air conditioning system draws 5 hp of power when operating, determine the maximum rate of heat removal from the house that it can provide.
Fireclay brick of dimensions 0.06 m x 0.09 m x 0.20 m is removed from a kiln at 1600 K and cooled in air at 40oC with h=50 W/m2/K. What is the temperature at the center and at the corners of the brick after 50 minutes of cooling?
Explain the difference between a jig and fixture which are used as work holding devices
consider a flow of air in a duct assume standard atmospheric pressure at 5000 ft altitude p12.228psi. at section 1 the
air enters a counterflow cooling tower at a rate of 100 m3s at 30 degree c dbt and 40 relative humidity. air leaves at
a pump accepts liquid water at 60 degf and 14 psia and compresses it isothermally to a pressure of 100 psia. the pump
an ideal regenerative steam power cycle operates so that steam enters the turbine at 30 bars and 500 degrees celcius
A rectangular reservoir with vertical walls has a plan area of 60000m2. Discharge from the reservoir take place over a rectangular weir. what will be the depth of water after one hour
You notice that the ceramic coffee mugs in the office get too hot to hold about 10 seconds after pouring in the hot coffee. The wall thickness of the cup is 2mm. What, approximately, is the thermal diffusivity of the ceramic of the mug? According to ..
calculate the attractive force of equilibrium between a pair of k and br- ion that just touch eachother rk 0.133nm and
Determine the diameter of pipe that should be selected. Use (a) the Moody diagram and (b) an alternate equation.
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