Rigid polymeric foam is made from _____.
a. calcium silicate foam
b. plastic foam
c. glass foam
d. resin foam
b. plastic foam
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Explain CAD/CAM and how it is used.
What will be an ideal response?
Which of the following is defined by UL as a device that trips when a fault current to ground is 6mA or more?
a. Class A b. Class B c. Class H d. Class R
NEMA-rated motors are designed to operate at plus or minus ____ percent of their rated voltage.
A. 5 B. 10 C. 15 D. 20
The article “The Ball-on-Three-Ball Test for Tensile Strength: Refined Methodology and Results for Three Hohokam Ceramic Types” discusses the strength of ancient ceramics. Several specimens of each of three types of ceramic were tested. The loads (in kg) required to crack the specimens are as follows:
a. Construct comparative boxplots for the three samples.
b. How many outliers does each sample contain?
c. Comment on the features of the three samples.