ASE-Style Multiple Choice
The ____ is the portion of the computer that directs the sequence of operations by electrical signals and governs the actions of the units that make up the computer.
A. central processing unit
B. modem
C. hard disc
D. system software
Answer: A
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Synchronous motors are sometimes operated without load to help correct plant power factor. In this mode of operation, they are called ____________________.
Fill in the blank(s) with the appropriate word(s).
Converting 2 3/4 in. to millimeters will round off to ____.
A. 60 mm B. 65 mm C. 70 mm D. 75 mm
The term xEV refers to any form of electric vehicle, including battery electric and fuel cell electric vehicles. These are also known as ____________________ because they produce no regulated exhaust emissions from the tailpipe.
Fill in the blank(s) with the appropriate word(s).
(a) Suppose that 0.100 kg of liquid copper is supercooled to 250 K, where it is allowed to nucleate and solidify adiabatically (no heat is lost to the surroundings). Calculate how much copper will solidify until the temperature recalesces to its melting point of 1356 K. The specific heats of solid and liquid copper in the temperature range of interest are respectively:
