In calculating apparent power (VA) in a three-phase circuit, the phase values of voltage and current are multiplied by _____.
A. three
B. four
C. five
D. six
Answer: A
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Match the following description with the artist. A. John Trumbull 1. regarded as a Loyalist during the Revolutionary War B. Charles Willson Peale 2. best known for his portraits of George Washington, ran a museum, stuffed birds, and practiced dentistry C. Benjamin West ? D. John Singleton Copley 3. from Connecticut and was discouraged by his father as a youth, "Connecticut is not Athens" ? ? 4. close friend of George III and official court painter, was buried in London's St. Paul's Cathedral
A. A-3, B-1, C-2, D-4 B. A-2, B-4, C-3, D-1 C. A-3, B-2, C-4, D-1 D. A-2, B-3, C-1, D-4 E. A-1, B-2, C-3, D-4
Steam turbines are driven by the pressure of high-velocity ______ discharged at a high pressure and temperature against the turbine vanes.
a. air b. water c. gas d. steam
A disadvantage of using low-power portable radios is that _____.
a. they are inexpensive b. there is no need to be in visual contact with the operator c. other radios can cause interference d. they can be equipped with microphone/headphone combinations
If there are 602 engineered-size brick in one cube consisting of 7 equal "straps", how many brick are in a single "strap"?
What will be an ideal response?