Question

11 multiple choice 1 point a fuel system for feeding a furnace consists of ____. a fuel gas footer and a pilot header a fuel gas header and pilot header a fuel gas header and a pilot footer a fuel gas header and a vent gasket 12 multiple choice 1 point the pilot gas in a fuel system feeding a furnace is supplied to the burners from ____. a mix of natural gas and refinery off - gas refinery off - gas propane tanks a natural gas source

Explanation:

For question 11: Furnace fuel systems use a main fuel gas header to supply primary fuel and a pilot header to supply the smaller, continuous pilot flame that ignites the main fuel. "Footer" and "vent gasket" are not standard components for this core fuel delivery function.
For question 12: Pilot gas needs a reliable, consistent, clean fuel source to maintain a steady flame. Natural gas is the standard dedicated source for this purpose, while refinery off-gas is inconsistent, propane is not the typical default, and mixed sources lack the reliability required for pilots.

Answer:

1. a fuel gas header and pilot header
2. a natural gas source