The initial cost of a packed-bed degassing reactor for removing trihalomethanes from potable water is $84,000. The annual operating cost for power, site maintenance, etc. is $13,000. If the salvage value of the pumps, blowers, and control systems is expected to be $9000 at the end of 10 years, the AW of the packed-bed reactor, at an interest rate of 8% per year, is closest to:
(a) $?26,140
(b) $?25,518
(c) $?24,900
(d) $?13,140
(c) $?24,900
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____ contact control devices change states when acted upon, but then return to their original state when released.
a. Standard b. Momentary c. Magnetic d. Pushbutton
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Which winding of a transformer is connected to the load?
a. Mutual b. Positive c. Secondary d. Primary
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A CV joint can operate at an angle of up to 40 degrees
Indicate whether the statement is true or false
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Which chemical is used to strengthen lead grids in maintenance-free batteries?
A) Copper B) Antimony C) Calcium D) None of these
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