What is a polymer definition? Polymer, any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, that are multiples of simpler chemical units called monomers. Polymers make up many of the materials in living organisms, including, for example, proteins, cellulose, and nucleic acids. Which polymers are thermoset? Thermoset polymer […]
What is a pitot-static tube used for?
What is a pitot-static tube used for? Basically, a pitot tube is used in wind tunnel experiments and on airplanes to measure flow speed. It’s a slender tube that has two holes on it. The front hole is placed in the airstream to measure what’s called the stagnation pressure. The side hole measures the static […]
How do you calculate built-in potential?
When driving in poor weather conditions your following distance should be?
When driving in poor weather conditions your following distance should be? Keep a minimum following distance of four seconds when driving under poor weather and traffic conditions. How far should your following distance be? It is recommended to keep a reasonable following distance so you can safely stop in a case of an emergency, e.g., […]
How can you increase the thermal efficiency of a Rankine Cycle?
How can you increase the thermal efficiency of a Rankine Cycle? The overall effect of lowering the condenser pressure is an increase in the thermal efficiency of the cycle. The average temperature at which heat is added to the steam can be increased without increasing the boiler pressure by superheating the steam to high temperatures. […]
What are 3 types of storage devices?
What are 3 types of storage devices? There are three main categories of storage devices: optical, magnetic and semiconductor. The earliest of these was the magnetic device. Computer systems began with magnetic storage in the form of tapes (yes, just like a cassette or video tape). These graduated to the hard disk drive and then […]
How is ammeter connected to measure the current in a circuit?
How is ammeter connected to measure the current in a circuit? An ammeter is connected in series with the circuit to be measured. The ideal ammeter will have zero resistance so as not to disturb the circuit. How are ammeters connected? An ammeter is a measuring device used to measure the electric current in a […]
Which metal has highest density?
Which metal has highest density? Osmium Is Silver heavier than steel? Silver itself is a light and soft metal, and the weight of the alloy mainly comes from the second metal. Stainless steel on the other hand, is much heavier. Stainless steel is more durable, can last longer, and does not tarnish, but this comes […]
What is Gdss in information system?
What is Gdss in information system? A group decision-support system (GDSS) is an interactive computer-based system used to facilitate the solution of unstructured problems by a set of decision makers working together as a group (DeSanctis and Gallupe, 1987). What is Gdss What are the differences between Gdss and DSS give examples? GDSS focuses on […]
What type of reaction is melting?
What type of reaction is melting? Melting, or fusion, is a physical process that results in the phase transition of a substance from a solid to a liquid. This occurs when the internal energy of the solid increases, typically by the application of heat or pressure, which increases the substance’s temperature to the melting point. […]