Where an outside edge is rounded, the convex edge is called a round edge or ____.
A. arc
B. radius
C. chamfer
D. fillet
Answer: B
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What is the difference between the compressor operating temperatures in an air-cooled condenser and a water-cooled condenser?
A) A water-cooled condenser operates 15°F below an air-cooled condenser. B) A water-cooled condenser operates 25°F above an air-cooled condenser. C) A water-cooled condenser operates 15°F above an air-cooled condenser. D) A water-cooled condenser operates 25°F below an air-cooled condenser.
This will help the compression rings create a tight seal:
a. compression and combustion pressure b. spring pressure c. oil pressure d. fuel pressure
What does a roll-out switch do?
A) It shuts off the gas valve if flames are sensed outside the combustion area. B) It allows the combustion components to be rolled out of the combustion chamber. C) It ensures proper clearance between the furnace and nearby walls. D) It checks to make sure the blower has not rolled out of position on the unit.
Autotransformer starters increase the amount of inrush current by reducing the voltage applied to the motor during the starting period.
Answer the following statement true (T) or false (F)