What is the face angle of flares used in the HVAC trade?
a. 30 degrees
b. 33 degrees
c. 45 degrees
d. 60 degrees
c
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A loose electrical terminal connection or a control pilot device with an intermittent open circuit can cause ____.
a. wear on magnet b. a motor to stop running c. pitted, worn, or broken arc-chutes d. insulation failure
These are used for perfect alignment of accurately constructed parts and for parts that have to be taken apart frequently.
a. taper pin b. rivet c. key d. dowel pin
The gas tungsten arc welding process is sometimes referred to as ____________________.
Fill in the blank(s) with the appropriate word(s).
What is one of the disadvantages of using dyes in leak detection?
A) They are difficult to clean from the affected area. B) They do not reveal precise locations. C) They gradually damage the overall system. D) They are highly sensitive to small coolant amounts.