An instrumentation amplifier has a high:

A) supply voltage.
B) CMRR.
C) power gain.
D) output impedance.


B

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Which of the following statements is true regarding frequencies of radio communications? Select all that apply.

A) US regulatory agencies are the NTIA of the Department of Commerce and the FCC. B) Use of specific frequencies is regulated, but general ranges of frequency usage are not. C) Frequencies allocated by other countries are generally well coordinated with the US.

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Steel and aluminum piping materials are required for use with _____.

a. HFC-407C b. HFC-410A c. ammonia d. HCFC-22

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Charging batteries can produce hydrogen and oxygen gasses.

Answer the following statement true (T) or false (F)

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Technician A says shops must have dedicated manifold and gauge sets for each manufacturer-approved refrigerant. Technician B says a shop should also have an additional set for contaminated refrigerant. Who is correct?

A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B

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