Does the sealing of cracks and joints in building envelope reduce diffusion?
What will be an ideal response?
No, it only reduces leakage through the envelope.
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All of the following are components of a universal joint EXCEPT:
A. differential B. flange C. driveshaft D. transaxle
What happens to the refrigerant pressure during desuperheating?
What will be an ideal response?
NEC Article 250 contains _____
a. requirements for overcurrent protection b. requirements for grounding and bonding c. requirements for calculating branch circuit loads d. requirements for branch circuit installation
All materials are elastic to some degree. It is desirable that certain parts of some designs compress when a load is applied to assist in making the part air- or watertight. The test results in the following table resulted from a test on a material known as Silon Q-177.
 FIGURE 1.png)
(a) Plot the data on semilog paper.
(b) Using the method of least squares, find the equation of the line of best fit.
(c) Draw the line on the curve.
(d) Calculate the coefficient of correlation.
(e) What pressure should be applied to achieve a relative compression of 60%?