Technician A says that aluminum on the thread of a bolt indicates that the threads in the case are damaged. Technician B says that all bolts should be checked for damage before they are reused. Who is correct?

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


Answer: C. Both A and B

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____ notes are notes that apply only to a specific subset of the drawings, such as the general structural notes, general architectural notes, or general mechanical notes.

A. General discipline B. General reference C. Detail D. Reference

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Which of the following could cause this condition?

A walk-in with TEV has the following conditions: ? Subcooling is 0° ? Superheat is 25° a. Dirty condenser b. Dirty or iced evaporator c. Overcharge d. Undercharge

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Silicon wafer is susceptible to warping when the wafer is subjected to a temperature difference across its thickness. Thus, steps needed to be taken to prevent the temperature gradient across the wafer thickness from getting large. As an engineer in a semiconductor company, your task is to determine the maximum allowable heat flux on the bottom surface of the wafer while maintaining the upper surface temperature at 27°C. To prevent the wafer from warping, the temperature difference across its thickness of 500??m cannot exceed 1°C.

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Heat pump thermostats generally require two stages of heating in order to control:

A) The compressor and outdoor fan. B) The auxiliary heat. C) The indoor and outdoor sections. D) The first and second stage heat strips.

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