What is the force that attracts all objects to each other? Gravitational force -an attractive force that exists between all objects with mass; an object with mass attracts another object with mass; the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the […]
Does preheating fuel increase efficiency?
Does preheating fuel increase efficiency? It is known that preheating gasoline or other fuel for internal combustion engines can produce more efficient vaporization and higher combustion efficiency and engine performance than cold fuel. What is regenerative air preheater? Regenerative type of air preheater:- Tri sector regenerative preheater is commonly used in power plant. this design […]
What is Gauss Seidel iteration method?
What is Gauss Seidel iteration method? Gauss–Seidel method is an iterative method to solve a set of linear equations and very much similar to Jacobi’s method. The name successive displacement is because the second unknown is determined from the first unknown in the current iteration, the third unknown is determined from the first and second […]
What is fin effectiveness?
What is fin effectiveness? The fin temperature effectiveness or fin efficiency is defined as the ratio of the actual heat transfer rate through the fin base divided by the maximum possible heat transfer rate through the fin base, which can be obtained if the entire fin is at base temperature (i.e., its material thermal conductivity […]
What is the formula for tire size?
Which technology is used to place the components directly on the printed circuit boards?
Which technology is used to place the components directly on the printed circuit boards? There are two methods of placing components on a printed circuit board (PCB). The first one is Through-Hole Mounting (THM) and the other one is specified as Surface Mount Technology (SMT). At EPR we use SMT as well as THM. Both […]
How do you calculate contact time disinfectant?
How do you calculate contact time disinfectant? Divide 1,500 gallons by the peak hourly flow of 15 gallons per minute to get 100 minutes of time available. Step 2: Your contact time is 100 minutes x 1.5 mg/l. This is equal to 150 min. mg/l of available contact time. How long does chlorine residual last? […]
How do you calculate the average molecular weight of a polymer?
How do you calculate the average molecular weight of a polymer? The distribution of molecular weights in a polymer sample is often described by the ratio of the weight average molecular weight to the number average molecular weight. In this case the ratio is 000 = 1.063. This ratio is the Polydispersity Index (or PDI)…. […]
What are the Nate specialty test areas?
What are the Nate specialty test areas? There are currently 21 NATE installation, service, and senior tests. Specialties include: Air Conditioning, Air Distribution, Heat Pumps, Gas Furnaces, Oil Furnaces, Hydronics Gas, Hydronics Oil, Light Commercial Refrigeration, Commercial Refrigeration, and Senior HVAC Efficiency Analyst. How many Nate certifications are there? Technicians choosing to earn senior level […]
What is a shot in injection molding?
What is a shot in injection molding? Two-Shot Molding Process The first is similar to traditional injection molding: A shot of resin is injected into a mold and cooled to form a solid part. What is the purpose of injection Moulding? Injection molding is a method to obtain molded products by injecting plastic materials molten […]