"Ringing" is a word that refers to the overshoot, undershoot, and damped oscillations that appear on many pulse signals
Indicate whether the statement is true or false
TRUE
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Which type of system is required to be grounded?
a. Systems less than 50V supplied by grounded transformers b. Circuits for cranes that operate over combustible fibers in Class III locations c. AC systems over 1kV that supply mobile or portable equipment d. Circuits for electrolytic cells
?The temperature of an arc can range between5500°F (3000°C) to above 36,000°F (20,000°C) but most SMAW temperatures are around __________.
A. ?4500°F (2500°C) B. ?3200°F (18000°C) C. ?1100°F (6100°C) D. ?6000°F (3300°C)
One drawback of using custom made, pre-fabricated duct sections is that ____.
A. if the measuring was not done correctly, the job may not go together B. altering a duct section at the job site results in lost time C. altering a duct section at the job site is extremely cost-ineffective D. All of the above.
What is DNA? What purpose does it serve?
What will be an ideal response?