What advantage does the R/2R ladder DAC have over a binary-weighted-input DAC?
A) The virtual ground is eliminated and the circuit is therefore easier to understand and troubleshoot.
B) It has fewer parts for the same number of inputs.
C) It is much easier to analyze its operation.
D) It uses only two different resistor values.
D
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?When might the GTAW process be used to make only the root pass on a pipe weld?
A. ?When a higher skilled welder to complete the weld is not available. B. ?When there is a faster process available to complete the weld. C. ?When it is too windy to do any more welding. D. ?When it is time to go home.
The quantity that represents a measure of how easily a given fluid can flow is known as
a. density b. specific weight c. viscosity d. none of the above
The amount of space occupied by matter defines:
A) Weight. B) Mass. C) The properties of matter. D) Volume.
What is the normal frequency of AC power in the United States?
A) 50 cycles per second B) 60 cycles per second C) 25 cycles per second D) 90 cycles per second