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.
For an electrician to do a basic wiring repair or replacement of light fixture wiring, you should budget from $81 to $153. Light Fixture Bulb Repair. The bulbs in light fixtures are often the first components to fail, and this is especially common with old-style incandescent bulbs. The thin tungsten filaments in these devices glows white hot when the light is on, and frequent switching will wear it out.