Determine the functional unit for comparing the following
a. Different brands of Clothes Washing Machine
b. Wall Paint of different qualities
c. Various goods transportation systems
d. Cell phones e. Air conditioning systems
What will be an ideal response?
a. Volume of laundry to be done in a given time.
b. Area of wall painted to last a certain time period
c. Mass (or volume of goods) to be transported over a specific distance in a given time period.
d. With cell phones, multiple functions can be identified. An example can be related to how long it would last before being replaced.
e. Volume of room to be maintained at a specified temperature for a time period.
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What will be an ideal response?
Find the Fourier transforms of the following functions:
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Why is nitrogen used to purge the system before using the flushing solvent?
A) Nitrogen will blow open the clogs. B) Nitrogen is more effective. C) Nitrogen is cheaper. D) The flush is activated by the presence of nitrogen.
A welding symbol consists of a small horizontal rectangle whose upper length is on the reference line. Below the rectangle is the designation 25°. To the left of the rectangle is the notation 3/4. What does this symbol mean?
A. This is a plug weld, which is to fill a hole in one piece of metal that is lapped over another piece of metal. The hole is 3/4 inch wide at the top. The weld will have an overall angle of 25° from the top of the weld to the bottom of the weld. B. This is a slot weld, which is to fill a slot in one piece of metal that is lapped over another piece of metal. The slot is 3/4 inch wide at the base. The weld will have an overall angle of 25° from the base of the weld to the top of the weld. C. This is a plug weld, which is to fill a hole in one piece of metal that is lapped over another piece of metal. The hole has a 3/4 inch wide diameter. The weld will have an overall angle of 25° from the base of the weld to the top of the weld. D. This is a flush weld, which is to fill an outside corner of two pieces of material. The corner is 3/4 inch wide at the base. The weld will have an overall angle of 25° from the base of the weld to the top of the weld. E. None of the above. This is an incorrect symbol.