The information used to identify a project or any part of the project is found in the _____.
a. notes
b. coordinates
c. title block
d. drawing index
c. title block
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Describe how a steam turbine works. Describe how a steam turbine works.
What will be an ideal response?
Vertical slipforming is used primarily for structures with a height greater than _____.
a. 100 feet b. 80 feet c. 50 feet d. 40 feet
A 5-m × 6-m × 8-m room is to be heated by an electrical resistance heater placed in a short duct in the room. Initially, the room is at 15°C, and the local atmospheric pressure is 98 kPa. The room is losing heat steadily to the outside at a rate of 200?kJ/min. A 300-W fan circulates the air steadily through the duct and the electric heater at an average mass flow rate of 50?kg/min. The duct can be assumed to be adiabatic, and there is no air leaking in or out of the room. If it takes 18 min for the room air to reach an average temperature of 25°C, find (a) the power rating of the electric heater and (b) the temperature rise that the air experiences each time it passes through the heater.
What will be an ideal response?
Which of the following is not a recognized grounding electrode in 250.52?
A. An underground metal water pipe in contact with the earth for 15 ft (4.5 m) B. A 2 AWG copper wire 20 ft (6.0 m) long buried in a ditch at least 21?2 ft (750 mm) deep C. A concrete-encased electrode consisting of 1?2-in. rebar that is 92 ft long and encased in the center of a 6-in concrete footing. D. A ground plate buried at 30 in. (750 mm) below the surface