In simple beams, stirrups are used to resist _____.
a. diagonal tension
b. upward thrust
c. compression stress
d. metal fatigue
a. diagonal tension
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Although the selection of rafters is similar to the selection of joists, three major differences will be encountered.
Answer the following statement true (T) or false (F)
A drafter does only the menial chores around an office.
Answer the following statement true (T) or false (F)
Once acid is created within the refrigeration system:
A) It can cause a burnout when the refrigerant is exposed to the compressor motor. B) It becomes impossible to remove brazing oxides and metal particles from the system, even if a filter drier is used. C) Only a multiple evacuation procedure can be used to evacuate the refrigeration system. D) Dry nitrogen must be used to reverse the increase in system high-side pressure caused by the acid.
Root mean square( RMS) is a mathematical formula for:
A) Measuring the pressure drop across an air filter. B) Calculating the electrical power passing through an alternating current circuit. C) Determining the price of a replacement compressor. D) Determining the physical resistance of an AC motor.