A single-slope converter
A) uses a ramp generator instead of a DAC B) uses a comparator at the input
C) employs a counter and latach output D) all of the above
D
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Some starters have ____ compression disk resistors and are used for starting polyphase squirrel cage motors.
a. graphite b. steel c. platinum d. stainless steel
If RC and RL differentiators with equal time constants receive the same pulse, ________
A) you can't tell the difference by observing the output wave forms B) the RC has the widest output pulse C) the RL has the most narrow spikes on the output D) one outputs an increasing exponential while the other outputs a decreasing exponential
The 1992 Energy Policy Act required that by 1994 all residential toilets use no more than ____ GPF.
A. 1.28 B. 1.6 C. 1.78 D. 2.0
?Why is a make-up water system necessary in a closed-loop hydronic system?
A. ?A break in a line may occur at any time. B. ?The system must not be subject to unintended pressure changes. C. ?Fluid is designed to be expelled from the system at regular intervals. D. ?Small fluid losses will occur over time.