When changing the superheat setting on a TXV, _____
a. the system must be shut down
b. the system must be in operation
c. completely remove the packing nut from the adjusting stem
d. close off the equalizer line until the adjustments are complete
b
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What law combines Boyle's Law and Charles' Law?
A) Bernoulli Principle B) Dalton's Law C) General Gas Law D) Constant Law
In general, the sidewall load on any raceway run should not exceed _____.
a. 100 pounds/foot of bend b. 200 pounds/foot of bend c. 350 pounds/foot of bend d. 500 pounds/foot of bend
What causes valve stem seizure or thread damage makes the valve difficult to open and close?
A) Excessive force when opening or closing a valve B) Throttling a valve that is not designed for throttling C) Failure to clean and lubricate valve stems D) Improper closing of a valve on a high-pressure line
Food bowls for ferrets should be made of:
A) wood B) metal C) glass D) earthenware