Why Weld usually fails in Haz? In the welded condition many stainless steels are susceptible to rapid intergranular corrosion or stress corrosion cracking. This is because the heat from welding sensitizes the base metal heat affected zone (HAZ) and the weld. What is the heat affected zone in welding? The heat affected zone (HAZ) is […]
What are the basic principles of emergency management?
What are the basic principles of emergency management? The fundamental principles of emergency management is are based on four phases – mitigation, preparedness, response and recovery. What are the seven emergency management steps? Here are seven steps you can take right now to “be prepared, not scared” the next time an emergency hits. Be Informed. […]
What is a Rube Goldberg machine examples?
What is a Rube Goldberg machine examples? This is an example of a Rube Goldberg machine, a complex contraption designed to achieve a simple task….Recyclable materials: aluminum foil. plastic containers. cardboard. water bottles. toilet paper or paper towel tubes for chutes. cereal or cake mix boxes to use like dominoes. beverage cans, soup cans, or […]
What does analogRead return?
What does analogRead return? The microcontroller of the board has a circuit inside called an analog-to-digital converter or ADC that reads this changing voltage and converts it to a number between 0 and 1023. In between, analogRead() returns a number between 0 and 1023 that is proportional to the amount of voltage being applied to […]
What are the different modes of heat transfer explain?
What are the different modes of heat transfer explain? Heat flows across temperature differences. There are three modes of heat transfer: conduction, radiation, and convection. Conduction and radiation are fundamental physical mechanisms, while convection is really conduction as affected by fluid flow. What is the difference between conduction and convection name one medium in each […]
What does annealing temperature depend on?
What does annealing temperature depend on? The annealing temperature of a standard PCR protocol is either 55°C [2, 3] or 60°C [4]. The chosen temperature depends on the strand-melting temperature of the primers and the desired specificity. For greater stringency higher temperatures are recommended [2]. Why do different primers require different annealing temperatures? In lower […]
Why is it necessary to wear masks during the COVID-19 pandemic?
Why is it necessary to wear masks during the COVID-19 pandemic? Masks are recommended as a simple barrier to help prevent respiratory droplets from traveling into the air and onto other people when the person wearing the mask coughs, sneezes, talks, or raises their voice. This is called source control. If everyone wears a mask […]
Which way do gears turn?
Which way do gears turn? Change direction: When two gears mesh together, the second one always turns in the opposite direction. So if the first one turns clockwise, the second one must turn counterclockwise. You can also use specially shaped gears to make the power of a machine turn through an angle. Which way does […]
What is a boundary layer in aviation?
What is a process in which the system remains infinitesimally close to an equilibrium state at all times?
What is a process in which the system remains infinitesimally close to an equilibrium state at all times? 2.8 QUASI-STATIC PROCESS If a process is carried out in such a way that at every instant, (intermediate states-‘a’, ‘b’, ‘c’, ‘d’) the system remains infinitesimally close to thermodynamic equilibrium state, then such a process is called […]