The Quine-McCluskey method of reducing complex Boolean expressions is used in place of a Karnaugh map when the original expression contains ________ or more variables
A) 8
B) 4
C) 5
D) 6
D
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A three-phase, four-wire system that has the advantage of providing three-phase power and allowing lighting to be connected between any of the secondary phases and the neutral would have a(n) _____.
a. delta secondary b. wye secondary c. open delta secondary d. wild leg secondary
Investigating the soils of northern Canada one summer, you dig a soil pit easily though fairly uniform peat material until, at 75 cm deep, your shovel hits a layer that is frozen solid. Into which type of soil are you most likely digging?
A) Histosol B) Fibrist C) Cryent D) Cryert E) Histel
Why is it possible to use smaller pipes in higher efficiency units?
A) The temperature of the flue-gas is higher. B) Volume and temperature of flue-gases are lower. C) Condensation pushes the gas through the pipes. D) The volume of the flue-gases is greater.
What danger is there to using a circuit breaker that is too large for a circuit?
A) The wire can overheat. B) The voltage supplied to the unit may be too high. C) The breaker may be too difficult to turn on. D) As long as the breaker is at least the minimum required size, it will be safe.