What is meant by the term "detent"?
A. Slow motion of a contact to ensure good electrical contact.
B. Rapid making and breaking of a contact.
C. The compensation furnished by heaters in the thermostat.
D. The control of the blower in the air handler.
Answer: B
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Las canalizaciones de metal están definidas en:
a. NEC® Artículo 368. b. NEC® Artículo 376. c. NEC® Artículo 378. d. NEC® Artículo 392.
What are the advantages of unity power factor?
What will be an ideal response?
Smaller chillers typically use
A) centrifugal or screw compressors B) centrifugal or rotary compressors C) rotary or hermetic compressors D) reciprocating or scroll compressors
Which alteration is made in the manufacture of a TTL gate to create an open-collector output?
A) The top output transistor is missing. B) The output transistors are missing. C) The input transistor is replaced by a diode. D) The output transistors are replaced by diodes.