What does the 1 stand for in E7018? The “E” in E7018 electrode indicates a tool used for an arc-welding process. The 70 means it makes welds that are very strong (70,000 psi). The 18 means two things: The “1” means the electrode can be used in any position, and the “18” means low hydrogen […]
How much entropy is in the universe?
How much entropy is in the universe? The total entropy of the observable universe is correspondingly higher, and is Sobs = 3.1+3.0−1.7 × 10104 k. Will the universe end? If the Universe holds enough matter, including dark matter, the combined gravitational attraction of everything will gradually halt this expansion and precipitate the ultimate collapse. Over […]
What factors affect lift and drag?
What factors affect lift and drag? Lift and drag also vary directly with the density of the air. Density is affected by several factors: pressure, temperature, and humidity. At an altitude of 18,000 feet, the density of the air has one-half the density of air at sea level. What factors affect drag force? Which are […]
Which cycle is more efficient for electricity generation plant?
Which cycle is more efficient for electricity generation plant? A combined-cycle power plant uses both a gas and a steam turbine together to produce up to 50 percent more electricity from the same fuel than a traditional simple-cycle plant. The waste heat from the gas turbine is routed to the nearby steam turbine, which generates […]
Why do metals typically have larger thermal expansion coefficients than ceramics?
Why do metals typically have larger thermal expansion coefficients than ceramics? In contrast, materials such as stainless steel possess weaker bonds between atoms, resulting in much higher coefficients of thermal expansion in comparison with Fine Ceramics. Why do ceramic materials have small coefficients of expansion? In ceramic materials, the atoms are not free to move […]
Which is correct Please find attached or please find the attached?
Which is correct Please find attached or please find the attached? For example, say “Please, find the attached file you requested yesterday.” When you don’t want to specify any particular file, avoid using “the”. You can simply write, “Please, find attached.” or its abbreviated form: PFA. “Attached” is the correct word for electronic communications. How […]
How do you find the forces in the method of section?
What will help sober up and lower Bal of an intoxicated person?
How does a technician test the voltage drop of the charging circuit?
How does a technician test the voltage drop of the charging circuit? Voltage drop testing is done by using a DMM to monitor actual voltage/amperage on a particular circuit, group of circuits, component, or electrical system (windshield wipers, cruise control, charging system, etc.). Actual voltage is then compared with the desired voltage or battery voltage […]
What are the characteristics of a hydraulic system?
What are the characteristics of a hydraulic system? Characteristics of a Good Hydraulic Fluid Viscosity. Viscosity is a measure of a hydraulic fluid’s resistance to flow. Compressibility. Compressibility is a measure of the amount of volume reduction due to pressure. Wear Resistance. Oxidation Stability. Thermal Stability. Filterability. Rust and Corrosion Protection. Foam Resistance. What is […]