Convergent nozzles accelerate subsonic fluids. If the nozzle pressure ratio is high enough, then the flow will reach sonic velocity at the narrowest point (i.e. the nozzle throat). In this situation, the nozzle is said to be choked. Increasing the nozzle pressure ratio further will not increase the throat Mach number above one.
Furniture, Fixtures and Equipment. The furniture, fixtures and equipment fixed asset category usually has a lower capitalization threshold than other fixed assets due to their lower acquisition costs. Desks, chairs, tables, couches, filing cabinets and movable partitions are part of your furniture fixed assets. Fixtures are anything attached to your building or structure that, if removed, would cause damage. Common fixed asset fixtures are installed lighting, sinks, faucets and rugs. Your copy machines, telephones, fax machines and postage meters are included as office equipment fixed assets.
How to Replace the Ballast in a Fluorescent Lighting Fixture. All fluorescent light fixtures consist of at least lamp(s), lamp holders, ballast and internal wiring. Some older types have starters, too. The ballast is used to create the voltage and current necessary to start and illuminate the fluorescent lamp.