Which type of ballast has the highest system efficiency?
a. Electronic instant-start
b. Electronic rapid-start
c. Standard
d. Hybrid
a. Electronic instant-start
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Air at 100 psi and 75°F fills a piston-cylinder assembly to a volume of 0.55 ft3. The air expands, in a constant-temperature process, until the pressure is 30 psi. (The constant-temperature process with a gas can be modeled as a polytropic process with n=1.) Determine the work done by the air as it expands.
Given: P1 = 100 psi; V1 = 0.55 ft3; P2 = 30 psi What will be an ideal response?
All organisms have the same number of pairs of chromosomes
Indicate whether the statement is true or false
For ____ construction, the perimeter footings, interior turn-downs, slab thickness, and reinforcing steel should be designed for the minimum sizes required for the structure and soil conditions.
A. slab-on-grade B. piers C. crawl space D. pallet
A given transformer has a primary voltage of 240 V and a secondary voltage of 24 V. Assuming the transformer is rated at 40 VA, what is the secondary current?
What will be an ideal response?