Why is recycling batteries good for the environment? Recycling batteries saves natural resources, because plastic and metals from used batteries can be used to make new batteries and protects the environment by keeping heavy metals out of landfills and the air. How should you dispose of batteries safely? Simply take any batteries which you need […]
How do you harden teeth with gears?
How do you harden teeth with gears? Induction hardening or selective heating may be employed to harden just the gear teeth only, which can be an effective method of reducing the distortion in a gear. Masking of journals and keyways may be employed in case hardening processes to keep them soft and allow for easier […]
What is the maximum shear stress in a thin walled pressurized sphere?
What is the maximum shear stress in a thin walled pressurized sphere? A pressure vessel is assumed to be a thin walled pressure vessel when the thickness of the vessel is less than 1/20 of its radius….List of Equations: Parameter Formula Maximum out-plane shear stress (τmax(out plane)) (pgr)/(2t) Spherical pressure vessel Hoop stress (σ1) (pgr)/(2t) […]
What type of waste is most commonly produced in hospitals?
What type of waste is most commonly produced in hospitals? These are infectious wastes, hazardous wastes, and radioactive wastes. Of these three hospital waste sub-categories, infectious and anatomical wastes — like surgical waste or bloody bandages — make up the majority. Which waste is used in landfilling? Municipal solid waste (MSW) and faecal sludge are […]
What causes crankcase Blowby?
What causes crankcase Blowby? When you combine a large cylinder bore, high cylinder pressure through turbocharging, many hours of use and marginal maintenance, excessive blowby is the result. The leakage of any combustion gases, air, or pressure into the engine’s crankcase is considered blowby. What are crankcase emissions or blowby gases are? The unwanted gases, […]
What happens to the current in a circuit if a 10 Ω resistor is removed and replaced by a 20 Ω resistor?
What is the step in the design process where you identify a problem or need that exists?
What is the step in the design process where you identify a problem or need that exists? The steps: The steps: ask to identify the need and constraints, research the problem, imagine possible solutions, plan by selecting the most promising solution, create a prototype, test and evaluate the prototype, and improve and redesign as needed. […]
How piezoelectric transducer can be used for pressure measurement?
How piezoelectric transducer can be used for pressure measurement? When a force is applied to a piezoelectric material, an electric charge is generated across the faces of the crystal. This can be measured as a voltage proportional to the pressure (see diagram to the right). As a result, piezoelectric sensors are not normally suitable for […]
How does gravity affect a car?
How does gravity affect a car? Gravity has a major effect on your vehicle when you are driving downhill or uphill. When you are driving uphill, gravity’s power is working against you, meaning it pulls your car the opposite direction, which slows down your car. You will need more engine power in order to stay […]
Why are metals conductive and polymers not conductive?
Why are metals conductive and polymers not conductive? Why are metals better conductors than polymers? These electrons are known as delocalised and so are ‘free to move’ across the surface of the metal. These free movement of electrons allows electricity to pass across a metal. In polymers, no such situation arrises and so electricity cannot […]