What is required when installing a 90% furnace that is not required for an 80% furnace?
A) An oxygen line for the combustion gas afterburner
B) A catalytic cell for the combustion gas catalytic converter
C) An extra large supply duct to handle the extra heat output
D) A drain for the condensate from the recuperative coil
D
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When calculating the load in volt-amperes for the main service-entrance conductors, the demand factor for the first 3,000 volt-amperes is 100%, the demand factor for all volt-amperes in excess of 3,000 volt-amperes is ___________________%.
Fill in the blank(s) with the appropriate word(s).
The ____ theory states that current flow is produced when an electron from one atom knocks electrons of another atom out of orbit.
a. repulsion b. bump c. terminal d. conductor
When polarized glad hands are used, which of the following should be impossible?
A. A full circuit brake failure B. Cross-connecting the trailer supply and service hoses C. Compounding service and parking brakes D. Wheel lock-up
Alkaline batteries ____.
A. Can contain silver oxide, mercury, lithium, or cadmium and are considered hazardous waste B. Can be disposed in the regular trash C. Should be physically damaged before being put in regular trash D. Should be returned to the manufacturer or dealer to be recycled