Which of the following is NOT true when evacuating an air conditioning system?

A. Air is removed
B. Moisture is removed
C. Contaminates are removed
D. Refrigerant is removed


Answer: D

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The material used to absorb moisture inside an AC system is called ________

A) PAG B) Desiccant C) Ester D) Drier

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How are clamp-on ammeters used?

A) They are clamped to the case of the unit. B) They are clamped onto the load. C) They are clamped around both power wires feeding the circuit. D) They are clamped around one of the power wires feeding the circuit.

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The ripple frequency of a full-wave rectifier is

A) equal to the ac input frequency B) one-half the ac input frequency C) twice the ac input frequency D) zero

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The ____ consist of pads and conductor lines that are made of thin conductive material such as copper on a base sheet or board.

A. printed circuits B. circuit board C. master pattern D. conductor E. none of the above

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