Calculation by the "________" method requires a survey of the site showing the elevation of the existing grade at each intersection point on the grid.
A. grid
B. grade
C. elevation
D. intersection
Answer: A
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Projection lines are:
a. Parallel to the inclined surface b. Parallel to the primary view c. Perpendicular to the reference plane d. Perpendicular to the top view e. Inclined to the finished auxiliary view
A delivery person needs to be well-mannered and polite. He or she must also have a good driving record and know the delivery area. Name two other abilities important to the delivery person
What will be an ideal response?
A fuse protects an electrical circuit by:
A) Using a material that limits the amount of current that can pass through the fuse due to the increase in the material's resistance. B) Melting when excessive current flows through it, opening the circuit. C) Using a heat motor that operates an imbedded set of contacts to open the circuit. D) Limiting the voltage that can flow through the fuse.
Based on the textbook, what is the proper charging procedure when retrofitting a critically charged R12 reach-in refrigerator to R401A with an ambient of 80°?
a. Charge R401A until the head pressure reaches 136 psig. b. Charge R401A until the head pressure reaches 167 psig. c. Weigh in the refrigerant to the amount indicated on the rating plate. d. Weigh in 80% of the amount indicated on the rating plate.