The duct that has the lowest resistance to airflow is _____
a. fiberglass ductboard
b. metal duct with duct liner
c. metal duct with exterior duct wrap
d. flexible duct
c
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The two classifications of overload relays are thermal and _____.
a. magnetic b. shading c. eutectic d. bimetallic
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What is the value of using a template drawing?
What will be an ideal response?
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In which system does less refrigerant enter the cylinder for each compression cycle, requiring more horsepower for each BTU of cooling?
A) A low-condenser-temperature system B) A low-evaporator-temperature system C) A high-evaporator-temperature system D) A high-condenser-temperature system
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Name the two most common semiconductor materials
A) Gallium and silicon B) Gallium and Arsenide C) Silicon and germanium D) Germanium and carbon
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