Preventative maintenance activities for a UPS system may include: battery impedance, voltage, and ___________.

A. inspection of cable connections
B. specific gravity test for the glycol solution
C. shorting the output terminals
D. All answers are correct


Answer: A

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The Handbook of Chemistry and Physics, 57th Edition (1976?1977), lists on pages D?61 to D?63, a section on the thermodynamics properties of the elements.    These include an empirical equation for calculating the enthalpy of the elements as a function of the temperature at constant pressure. This equation has the form:

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____________________ controls, which use a variety of devices to detect the presence or absence of light, are used where physical contact is not needed or desired.

Fill in the blank(s) with the appropriate word(s).

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A leaking evaporative system can be diagnosed using ________

A) A smoke machine B) Nitrogen gas and headphones C) Either of these D) Neither of these

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An important input to the backup camera system comes from the ________, which signals the backup camera when the transmission is shifted into reverse

A) Rear view mirror B) Backup lamps C) Dimmer switch D) Transmission range switch

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