What effect do non-condensable gases have on a refrigeration system?
A) They increase evaporator pressure and decrease compression ratio.
B) They create bubbles in the liquid refrigerant stream leaving the compressor.
C) They increase condenser pressure and compression ratio.
D) They decrease the compression ratio and condenser pressure.
C
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A Z-tie is made from copper coated or zinc-coated steel.
Answer the following statement true (T) or false (F)
When adding distance constraints in assembly modeling, you use points, edges, and ____ to define the distances between the instances.
A. surfaces B. prisms C. lines D. spheres
Explain the difference between constant current and constant voltage.
What will be an ideal response?
Why did the Germans employ millions of Europeans as forced slave laborers?
a. to reduce acute labor shortages b. to keep middle-class women at home c. to reduce resistance in occupied areas d. to fulfill Nazi racial policies