Which of the following is not part of the operating sequence of a natural-draft furnace?
a. The draft inducer starts on a call for heat.
b. The controls prove that the pilot is lit.
c. The gas valve energizes and opens.
d. The fan switch starts the blower.
a
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Keyways and keyseats are dimensioned from the opposite side of the hole or shaft
Answer the following statement true (T) or false (F)
Technician A says that water based fire extinguishers remove oxygen from the fire. Technician B says that CO2 fire extinguishers remove oxygen from the fire. Which technician is correct?
A) Technician A only B) Technician B only C) Both Technicians D) Neither Technician
To measure a .3125 inch inside rounded corner, you would use a:
A) Curvometer B) Inside corner gage C) Radius gage D) Fillet gage
What is the decimal value of 2-3?
A) 0.8 B) 0.125 C) 0.75 D) 0.25