How do we figure ROI?
What will be an ideal response?
We calculate this by taking the operating cost of the equipment and subtracting
it from the amount of money it saves. Once we know the amount of profit or
money made using the machine, we divide the total cost of the equipment by this
number to determine long it takes to pay for itself. If we figure it on a part-bypart
basis, we would determine how many parts it needs to make to pay for itself
and then turn that into a time scale using some correlation between parts produced
and the time needed to produce them. If we are working on a cost savings vs.
human labor then we simply figure the per hour savings and use that to get the
total hours needed to pay for the robot. Once we have that figure we simply
divide be the number of hours it runs per year or week to figure out the time for
payback.
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Which of the following statements is true?
A. For the benzene + toluene system, the activity coefficient values for both components across all compositions will be close to 1. B. The infinite dilution activity coefficient values for a mixture behaving according to the ideal solution must be zero. C. The excess molar Gibbs free energy, divided by RT, is equal to the sum of the activity coefficient values, weighted by their mole fraction. D. Another statement of the chemical equilibrium condition for mixtures in phase equilibrium says that the mixture fugacity coefficient of component i must have the same value in all of the phases that are in equilibrium. E. None of the above are true.
?_____ is formed so there is no need to make a longitudinal weld.
Fill in the blank(s) with the appropriate word(s).
What makes a material a good electrical conductor?
A) Having a large number of free protons B) Having eight electrons in the outer shell C) A large number of free electrons D) Having very few electrons
Sample the signal x(t) = 15 [sinc(5t) ? ?2(t)] sin(32?t) to form the signal x[n]. Sample at the Nyquist rate and then at the next higher rate for which the number of samples per cycle is an integer. Graph the signals and the magnitude of the CTFT of the continuous-time signal and the DTFT of the discrete-time signal.
What will be an ideal response?