With the aid of a sketch similar to that for a simple cubic lattice in Fig. 2.10, demonstrate that the interplanar spacing of the {110} planes in the body?centered cubic lattice also equals ?/2
What will be an ideal response?
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Accurate air flow measurement requires straight, unobstructed pipe for a minimum of 10 diameters upstream and 5 diameters downstream of the measuring device. In one particular application, physical constraints compromised the pipe layout, so the engineer was considering installing the air flow probes in an elbow (Plan A), knowing that flow measurement would be less accurate but good enough for process control. This plan would be acceptable for only 2 years, after which a more accurate flow measurement system with the same costs will be available. Plan A has a first cost of $25,000 with annual M&O estimated at $4000. Plan B involves installation of a recently designed submersible air flow probe. The stainless steel probe could be installed in a drop pipe with the transmitter located in a
waterproof enclosure on the handrail. The cost of this system will be $88,000, but because it is accurate, it would not have to be replaced for at least 6 years. Its maintenance cost is estimated to be $1400 per year. Neither system will have a salvage value. (a) At i = 12% per year, select A or B on the basis of an AW comparison. (b) Use future worth analysis to select between A and B. What will be an ideal response?
What would be the main effect of giving nitrogen fertilizer to a plant?
What will be an ideal response?
Which of the following grooving methods does not remove any material from the pipe?
a. Roll grooving b. Single grooving c. Dual grooving d. Cut grooving
____________________ marks are deep, vertical scratches on the skirt of the piston.
Fill in the blank(s) with the appropriate word(s).