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Questions in engineering

[Answered] Which of the following devices can help visually determine the moisture content of the refrigerant? A. filter-drier B. sight glass C. accumulator D. crankcase heater

[Answered] What must be done when a refrigeration system has automatic leak detection equipment installed? A. It must be primed with refrigerant prior to use. B. It must be replaced every three years. C. All sensors must be replaced monthly. D. It must be calibrated periodically.

[Answered] Medium-temperature refrigeration systems are classified as having evaporators that operate in what temperature range? A. -10 °F to 32 °F B. 0 °F to 20 °F C. 20 °F to 40 °F D. 32 °F to 50 °F

[Answered] What additional feature does tagging an entire group offer in Yammer? A. Muting notifications for group members B. Automatically archiving the conversation C. Inviting external experts to join D. Hiding the conversation from others

[Answered] What is this thing right here

[Answered] What is a fixed-position layout commonly used for? A. Manufacturing small, standardized products B. Producing large, complex products C. High-volume production of similar items D. Continuous flow production

[Answered] How do you check the heat exchanger with a gas pack? A. Check the flame using a lighter with the unit running. B. Check the flame with a lighter with just the fan on. C. Remove the lid and visually inspect the heat exchanger if the unit is over 10 years old, or use a lighter with just the fan if under 10 years old. D. Check the flame with a lighter with the unit off.

[Answered] What is the maximum fluid temperature to which a solder joint should be exposed? $100^{\circ} F \left(38^{\circ} C \right)$ $200^{\circ} F \left(93^{\circ} C \right)$ $250^{\circ} F \left(121^{\circ} C \right)$ $300^{\circ} F \left(149^{\circ} C \right)$

[Answered] How is a split-system condensing unit installed in an area where seismic activity occurs? A. attaching to a concrete pad with toggle bolts B. attaching to a concrete pad with anchor bolts C. attaching to a composite pad with lag screws D. attaching to a suitable pad with construction adhesive

[Answered] Which components are all part of a refrigeration system's compressor oil return system? A. Oil separator, oil reservoir, and oil regulator B. Oil reservoir, liquid line filter drier, and suction line filter C. Accumulator, liquid line solenoid, and oil reservoir D. Liquid receiver, oil regulator, and accumulator