In lighting design, a variable called CRI is often used. What does CRI stand for?
a. Color Repeatability Index
b. Color Rendition Index
c. Capacitive-Resistive Index
d. none of the above
b. Color Rendition Index
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The First Continental Congress was called in order to
A. consider ways of redressing colonial grievances against Britain. B. become a legislative body. C. write the Declaration of Independence. D. decide which of Parliament's taxes the colonies would and would not pay. E. help implement provisions of the Quebec Act.
The EPR valve is installed in the suction line at the evaporator outlet and it ____.
A. modulates the refrigerant vapor to the compressor B. prevents the boiling point in the evaporator from dropping below a pre-set point C. when used with a TX valve the system has the characteristics of maintaining a constant superheat and keeping the pressure from going too low D. All of the above.
When the “A” string of a properly tuned violin is plucked, it takes 2.27 ms to return to it’s starting position. What is the frequency of this oscillation?
What will be an ideal response?
Digital quantities have values that are specified as 1 or 0, HIGH or LOW, etc. The voltage values associated with these digital quantities fall within specified limits. On the other hand, analog values for physical process control may be any value over a wide range of values, with each different value having a different meaning. As a result:
A) digital computers are unable to monitor or control physical analog operations with any degree of accuracy or certainty. B) digital computers are unable to monitor analog physical values regardless of the interfacing techniques used to make the two systems compatible. C) digital computers have the capability to monitor only those analog physical operations that fall within the specified ranges of digital HIGH and LOW voltage levels. D) digital computers that monitor or control analog physical values must have an accurate means of transforming analog data to meaningful digital data and vice-versa.