As a safety measure, when starting an LP gas furnace, you should position yourself
A) Off to the side and low to the ground
B) In any position so long as you are not touching the furnace
C) Off to the side and off the ground
D) Directly in front of the burners in order to observe the lighting sequence
C
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In order to prime a typical fuel sub-system with a hand-primer pump that has to be installed into the circuit, where should it ideally be located?
A. close to the pick-up tube B. upstream from the primary filter C. upstream from the transfer pump D. downstream from the secondary filter
All of the following statements are true EXCEPT:
A. Replacement of CV joint seals usually requires removal of the axle. However, disassembly of the entire joint is not necessary. B. E.P. gear oils contain zinc. C. Sometimes CV joint boots tear or rub on something and become damaged. D. Front-wheel-drive vehicles have CV joints at each end of their two drive axles.
The copper tubing used in the field piping of refrigeration systems is type ____________________.
Fill in the blank(s) with the appropriate word(s).
The form of stress that involves opposed, twisting forces is _____
a. tension b. shear c. compression d. torsion