Which refrigerant is due to be phased out (no new refrigerant manufactured) by 2030?
A) HFC-410A
B) HFC-407A
C) HCFC-22
D) HFC-417A
Answer: C
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What type of noise will be caused by a piston slap?
A. A sharp, metallic rapping noise that occurs with the engine idling. B. A hollow, rapping noise that is most noticeable on acceleration when the engine is cold. C. A light, rapping noise at speeds above 35 mph. D. A heavy thumping knock when the engine is first started
Refer to the figure above. The type of support that is eccentric on the inside radius of the elbow is a type _____ support.
a. of lateral
b. 1
c. 3
d. of weak
CEMF (counter electro-motive force) is sometimes called counter ____________________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is true with regard to fixed stage switchboards?
a. They are not referenced in the NEC®. b. They are not required to contain overcurrent devices. c. They are permitted to supply both stage and non-stage equipment. d. They must be located on the stage.