Why must refrigerants that fractionate, such as R-410a, be charged as a liquid?
What will be an ideal response?
Refrigerants that fractionate, such as R-410A, must be charged as liquid to prevent the separation of the refrigerant.
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Although there are no defined rules as to which views must be included or excluded in a formal engineering drawing, there is a preferred configuration-the front, top, and ____ views.
A. back B. bottom C. right-side D. left-side
The primary method of varying the speed on a DC shunt motor is to adjust the voltage and current on the field winding or the _____.
a. rheostat b. armature c. controller d. stator key
One of the primary strengths of a bureaucratic form of organization structure is
improvement in organizational efficiency.
Indicate whether the statement is true or false.Most concrete used in construction is ____ concrete delivered to the job in a large truck.
a.precast b.prefabricated c.ready-mixed d.cast-and-pour