What is oxidation ponds? Oxidation ponds, also called lagoons or stabilization ponds, are large, shallow ponds designed to treat wastewater through the interaction of sunlight, bacteria, and algae. During the process of photosynthesis, the algae release oxygen needed by aerobic bacteria. What is the depth range of facultative ponds? Facultative ponds typically range from three […]
What are phospholipids used for?
What are phospholipids used for? Phospholipids differ from triglycerides in being surface-active and they are used in food products as emulsifiers because they migrate to the interface between oil and water, and reduce the inter-facial tension, thereby stabilizing an emulsion. Commercial phospholipid preparations are called lecithin. What is a phospholipid and what is its function? […]
What is a mass spring/damper system?
What is a mass spring/damper system? The mass-spring-damper model consists of discrete mass nodes distributed throughout an object and interconnected via a network of springs and dampers. This model is well-suited for modelling object with complex material properties such as nonlinearity and viscoelasticity. What is active mass damper? The application of active mass damper (AMD) […]
What will be the current in 8 ohm resistor?
How is the combined heat transfer coefficient defined?
How is the combined heat transfer coefficient defined? The general definition of the heat transfer coefficient is: where: q: heat flux, W/m2; i.e., thermal power per unit area, q = d /dA h: heat transfer coefficient, W/(m2•K) ΔT: difference in temperature between the solid surface and surrounding fluid area, K. What equation do we use […]
How can we prevent aliasing effect?
How can we prevent aliasing effect? Aliasing is generally avoided by applying low pass filters or anti-aliasing filters (AAF) to the input signal before sampling and when converting a signal from a higher to a lower sampling rate. What is the need for anti-aliasing filter prior to downsampling? Answer. An “anti – aliasing” or “anti-imaging” […]
Do I need a ground fault circuit interrupter?
Do I need a ground fault circuit interrupter? The NEC requires GFCIs on all exterior and bathroom receptacles (another term for outlets). GFCIs are also required on all receptacles serving kitchen countertops. In laundry rooms and utility rooms, GFCIs should be installed on outlets within six feet of sinks, washing machines, and water heaters. What […]
How is a mousetrap car powered?
What type of polymer is Bakelite?
What type of polymer is Bakelite? thermosetting polymer What are thermoset plastics used for? Common products and applications that are made from thermoset plastics include construction equipment panels, electrical housings and components, insulators, cell tower tops, heat shields, circuit breakers, agricultural feeding troughs, motor components, and disc brake pistons. How do you make a thermoplastic? […]
Why wet bulb temperature is lower than dry bulb temperature?
Why wet bulb temperature is lower than dry bulb temperature? Wet Bulb Temperature – T The adiabatic evaporation of water from the thermometer and the cooling effect is indicated by a “wet bulb temperature” lower than the “dry bulb temperature” in the air. The evaporation is reduced when the air contains more water vapor. Why […]