What does the equivalent length of a duct fitting mean?
A) It is a factor that allows comparison of two different-diameter ducts.
B) It is the maximum length that any duct run may be.
C) It is the length of straight duct that would have a pressure drop equal to the pressure drop through the fitting.
D) It is the length that air will travel after it leaves a supply register.
C
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The process of mixing the triglycerides that make up vegetable oil with a methanol-catalyst solution to break them up into smaller fatty-acids is called ____
a. methylation c. dehulling b. catalysis d. transesterfication
The extent of the value of a radical invention is known only to its inventor.
Answer the following statement true (T) or false (F)
There are two methods of determining volume of soil removed from planting pits and contained within root balls: both are based on diameter and lengths of individual pits and root balls
Indicate whether the statement is true or false
When an air-cooled split system operates at low ambient temperatures:
A) System efficiency is increased because of the extra cooling effect of the colder air. B) Head pressure increases because of the inverse relationship between ambient temperature and condenser temperature. C) Low ambient controls are necessary for safe operation. D) The decreased air density reduces the airflow over the condenser.