The input of an analog-to-digital converter is
A) a clock pulse. B) a voltage level. C) a binary number. D) any of these
B
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Which of the following statements is true?
a. If an HVAC contractor detects an IAQ problem during routine maintenance, the contractor should immediately inform the customer about the problem in writing. b. HVAC contractors have no liability for system repairs that do not meet local code requirements if the code was changed before the repairs were completed. c. Occupants of a building who claim to suffer from sick-building syndrome may sue the owner of the building, but not the HVAC contractor, for damages. d. The International Building Code requires that HVAC contractors assume unlimited liability when retrofitting existing systems.
Assess the validity of the following statement: "The Compromise of 1850 and the enactment of the Kansas-Nebraska of 1854 made the outbreak of the Civil War in 1861 inevitable."
What will be an ideal response?
An examine-off instruction is true when the field device ____________________ (does, does not) supply a voltage to the input terminal and ____________________ (does, does not) allow logic continuity in its rung.
Fill in the blank(s) with the appropriate word(s).
The activity that consists of breaking a job into its component tasks and then analyzing each step for
potential hazards is called a _____. a. job safety analysis b. hazardous incident simulation c. safety breakdown structure d. safety pre-assessment