Which of the following is the SI unit for mass?
a. kilograms
b. milligrams
c. grams
d. slugs
a. kilograms
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Which of the following elements is not a power-consuming device?
A. The sequencer heater coil. B. A magnetic solenoid that moves the armature in a contactor. C. The contacts of a contactor. D. The blower motor.
Which of the following is NOT a potential problem in furnace operation?
a. Quick start-up b. Plugging of the process tubes c. Positive pressure in the firebox d. Uniform flame height and uniform process flame color
Give an overview of four-step switching.
What will be an ideal response?
Which of the following is not listed in the text as a benefit some interior coatings offer to homeowners?
A) Resistant to scuffs and marks B) Anti-microbial finish C) Removal of odors from the air D) Reduction of IAQ