Category: Engineering

What process is spot welding? Spot welding (also known as resistance spot welding) is a resistance welding process. This welding process is used primarily for welding two or more metal sheets together by applying pressure and heat from an electric current to the weld area. What is hold time in spot welding? Hold time is […]

What type of magnet attracts iron? Ferromagnetic materials such as iron, nickel and cobalt are therefore attracted to magnets, as well as rare-earth metals like gadolinium, neodymium and samarium. Can a magnet attract iron? Magnetic Field, Magnetic Field, 1) When two magnets are brought near each other, like poles repel; opposite poles attract. 2) When […]

How do you calculate heat load of shell and tube heat exchanger? The main basic Heat Exchanger equation is: Q = U x A x ΔTm = The log mean temperature difference ΔTm is: ΔTm = (T1 – t2) – (T2 – t1) = °F. Where: T1 = Inlet tube side fluid temperature; t2 = […]

How do you control the speed of a linear actuator? A simple way to lower the speed of a linear actuator is to reduce the voltage at which you drive it. The speed of Actuonix actuators is approximately proportional to voltage. This means that if you were to drive one of our 12V actuators at […]

What are the types of valves? Common types of valves include: Ball Valve. Predominantly equipped with quick-acting 90-degree turn handles, these valves use a ball to control flow to provide easy on-off control. Butterfly Valve. Check Valve. Gate Valve. Knife Gate Valve. Globe Valve. Needle Valve. Pinch Valve. What are the three types of valve […]

What are the 3 types of tolerances? A tolerance is an acceptable amount of dimensional variation that will still allow an object to function correctly. Three basic tolerances that occur most often on working drawings are: limit dimensions, unilateral, and bilateral tolerances. What is definition of tolerance? 1 : capacity to endure pain or hardship […]

How do you ask someone for help? (To) give (someone) a hand / (To) lend (someone) a hand. This is another really common way to ask for help in English. To help someone out. Help me out, help you out, help them out. (To) help out. It can be with assistance or it can be […]

What is the formula for calculating principal payment? What Is Your Principal Payment? The principal is the amount of money you borrow when you originally take out your home loan. To calculate your principal, simply subtract your down payment from your home’s final selling price. For example, let’s say that you buy a home for […]

How does fouling factor affect heat transfer? The deposition of any undesired material on heat transfer surfaces is called fouling. Fouling increases the overall thermal resistance and lowers the overall heat transfer coefficient of heat exchangers. Fouling also impedes fluid flow, accelerates corrosion and increases pressure drop across heat exchangers. What are the common causes […]

Can a tight serpentine belt cause loss of power? If the belts are too tight, they can put a strain on the shaft (and its bearing) of the alternator, power-steering pump and even the water pump. How long does a serpentine belt usually last? 60,000 to 100,000 miles What happens if serpentine belt breaks while […]