The Wheatstone bridge is used to determine the value of an unknown _________
A. resistance
B. voltage
C. current
D. circuit
A
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A) Strong hybrid B) Full hybrid C) Medium hybrid D) Mild hybrid
If combustion air openings pass through vertical ducts with 4,000 BTU input, how large should the openings measure?
A) 1 sq in B) 4 sq in C) 2 sq in D) 3 sq in
As the refrigerant passes through the condenser, the refrigerant is:
A) Condensed from a gas to a liquid, and then superheated. B) Condensed from a gas to a liquid, and then subcooled. C) De-superheated, condensed from a gas to a liquid, and subcooled. D) Superheated, condensed from a liquid to a vapor, and then subcooled.
Determine the length of 2" pipe required to complete a 45 degree bend.
Fill in the blank(s) with the appropriate word(s).