Portland cement concrete consists of what four primary elements?
What will be an ideal response?
The four primary elements Portland cement concrete consists of are: Portland
cement, coarse aggregate, fine aggregate, and water.
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The United States uses which of the following standard systems of wire sizes?
a. Manufacturer’s Gauge b. Manufacturer’s Foundation c. American Wire Gauge d. International Electrotechnical Commission
An engineer brings you a basic design for a steam power plant. The heat is input to the plant from a source at 500oC, and heat is rejected to cooling water at 20oC. The power plant is to produce 250 MW of power while receiving heat at a rate of 700 MW. Is this process possible?
Given: Proposed: TH = 500oC = 773 K; TC = 20oC = 293 K; Q?H=700 MW; W?=250 MW
Search the Web for information on a type of password cracking technique called a dictionary attack. Describe why this type of attack makes strong passwords critical.
What will be an ideal response?
NEMA recommends that the unbalanced voltage not exceed plus or minus ____________________ percent.
Fill in the blank(s) with the appropriate word(s).