How do you find the hydraulic diameter of a rectangular duct? The hydraulic diameter is four times the flow area divided by the duct perimeter. The formulas given before show the diameter d. For rectangular and oval ducts, a corrected hydraulic diameter should be used. What is meant by hydraulic diameter? The hydraulic diameter (aka […]
What is cogeneration and what are its advantages?
What is cogeneration and what are its advantages? Cogeneration can significantly reduce carbon emissions and energy costs, as this EPA case study shows. And while typical combustion systems have an efficiency of about 40-50 percent, cogeneration systems that combine the power and heat generation processes can be up to 80 percent efficient. What are the […]
What is hoop stress in thick cylinder?
What is hoop stress in thick cylinder? In mechanics, a cylinder stress is a stress distribution with rotational symmetry; that is, which remains unchanged if the stressed object is rotated about some fixed axis. circumferential stress, or hoop stress, a normal stress in the tangential (azimuth) direction. Where does the maximum hoop stress in a […]
How do you find the pin out of a connector?
Which activities is an example of incident coordination?
Which activities is an example of incident coordination? Incident Coordination Examples of coordination activities include: Establishing policy based on interactions with agency executives, other agencies, and stakeholders. Collecting, analyzing, and disseminating information to support the establishment of shared situational awareness. Which NIMS component includes the incident command system? Command What does ICS stand for in […]
What are project management tools?
What are project management tools? Project management tools are the project manager’s answer to manage projects. Simple projects require nothing more than a checklist while other complex ones require proper planning, assigning tasks, setting deadlines, making sure that everyone sticks to them, and tracking the time spent. What is enterprise implementation? The Enterprise Implementation Framework […]
What are the air Properties indicated in a psychrometric chart?
What are the air Properties indicated in a psychrometric chart? Seven properties of atmospheric air are shown on the psychrometric chart. These properties are: dry bulb temperature, wet bulb temperature, dew point, humidity ratio, relative humidity, specific volume, and specific enthalpy. How is psychrometric chart calculated? the psychrometric chart: Locate the dry bulb tem- perature. […]
Is heat transfer reversible process?
Is heat transfer reversible process? In other words, the process of transfer of heat between two bodies which are isolated from the environment is irreversible. How do you know if a process is reversible or irreversible? Summary A reversible process is one in which both the system and its environment can return to exactly the […]
What type of simple machine is a screw?
What type of simple machine is a screw? A screw is a special kind of inclined plane. It’s basically an inclined plane wrapped around a pole. Screws can be used to lift things or to hold them together. Examples of the screw simple machine include swivel chairs, jar lids, and, of course, screws. Is a […]
How are molds made for injection molding?
How are molds made for injection molding? Injection molds, which are usually made from steel, contain cavities that will form the parts. Melted plastic is injected into the mold, filling the cavities. The mold is cooled, and the parts are ejected by pins. This process is similar to a jello mold which is filled then […]