What advantages does a suspended lighting system have?

What will be an ideal response?


A lighting system composed of fixed outlets and a fixed conduit system is not easily adaptable to changing requirements. On the other hand, a system of luminaires suspended from a trolley system can be readily shifted from one location to another as desired. It is not necessary to take down or replace heavy conduit systems as would be required to change a fixed lighting outlet system. If extensive alterations or a major plant changeover requires the removal of the lighting trolley duct, the duct sections are completely reusable.

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What is the preferred run-in method for a highway diesel engine after an overhaul?

A. do not exceed 50 mph for the first 1000 miles B. do not run at full load for the first 500 miles C. full load operation on a dynamometer D. highway road test

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According to EPA regulations, which individuals are required to keep records?

A) Technicians and wholesalers B) Employers and equipment owners C) Technicians and employers D) Technicians, employers, wholesalers, and equipment owners

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When the evaporator on a low pressure chiller has a small leak

A) air leaks into the evaporator since it is in a vacuum B) an external application of leak tight adhesive will correct it C) refrigerant escapes slowly from the leak, reducing the charge D) it can be ignored because chillers hold a lot of refrigerant

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