What is it called when you have a situation where it may be permissible to allow the location of individual features in a pattern to differ from the tolerance related to the items as a group?
a. composite positional tolerance
b. projected tolerance zone
c. virtual condition
d. coaxial position tolerance
a. composite positional tolerance
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Find the estimated emissions listed below for an Uncontrolled (Post-NSPS) Large Wall-fired Boiler natural gas cogeneration facility that burns 500 million standard cubic feet (scf) of natural gas per year. Use the EPA’s AP-42 (Volume 1, 5th ed.) Chapter 1: External Combustion Sources Emission Factors for Natural Gas Combustion.
a. Tons of NOx emitted per year b. Tons of CO emitted per year What will be an ideal response?
When troubleshooting an induced draft gas furnace, what should be checked if the induced draft fan comes on but the igniter is never energized?
A) Check the control transformer. B) Check the microamp signal of the flame sensor. C) Check the incoming gas pressure. D) Check the draft pressure switch to see if it is closed.
_____ is an example of an insulating material
A) Water B) Copper C) Glass fiber D) Iron
To secure two pieces of sheet metal together, a technician may use a _________________________ since no pre-drilling is required.
Fill in the blank(s) with the appropriate word(s).