Category: Engineering

Why are STEM subjects important? STEM stands for science, technology, engineering, and mathematics. STEM is important because it pervades every part of our lives. STEM activities provide hands-on and minds-on lessons for the student. Making math and science both fun and interesting helps the student to do much more than just learn. Why is STEM […]

What is the opposition to the flow of electricity? electrical resistance: The opposition offered by an electrical conductor to the flow of a current through itself, resulting in a conversion of electrical energy into heat and radiation. The SI derived unit of resistance is the ohm. What is the opposition to the flow of electrons […]

What does a typical day look like for an electrician? Electricians usually start their days around 7am at the “gang box”, which is a colloquial term in construction for the tool box with all of the materials needed for the project. When the electrician is called in to install the wiring for a building, the […]

When jump starting a car always remember what? 6. Remember to keep the cables away from any belts so that when starting the car back up, they do not get tangled or caught up into the engine. 7. Start the live car and rev the engine slightly to charge the dead battery. When jump starting […]

What is Galerkin finite element method? In mathematics, in the area of numerical analysis, Galerkin methods are a class of methods for converting a continuous operator problem (such as a differential equation) to a discrete problem. the boundary element method for solving integral equations, Krylov subspace methods. What is the weak form of an equation? […]

How do you detect fouling in a heat exchanger? The off-line and on-line methods are build up by dividing the heat exchanger into sections. The states (temperatures) in the sections are represented with physical equations and the Kalman filter is used to estimate the states. Fouling detection is done by monitoring parameters of the model. […]

Do all metals have a slip system? (b) All metals do not have the same slip system. The reason for this is that for most metals, the slip system will consist of the most densely packed crystallographic plane, and within that plane the most closely packed direction. This plane and direction will vary from crystal […]

How do you calculate the expansion of a pipe? ΔL = aLo(T2-T1) (Equation 5) If the pipe is installed at an ambient temperature of 70 deg F, and the temperature of the pipe increases to 270 deg F, we can expect about 1.5 in of expansion in the 100 ft unanchored run. How do you […]

How do you create a row vector in Matlab? MATLAB Lesson 3 – Vectors In MATLAB you can create a row vector using square brackets [ ]. To refer to elements in a vector MATLAB uses round brackets ( ). MATLAB uses vectors of integers between 1 and the length of a vector to refer […]

How did Planck explain blackbody radiation? All bodies radiate energy. The amount of radiation a body emits depends on its temperature. To explain the blackbody radiation curve, Planck assumed that the exchange of energy between radiation and cavity walls takes place only in discrete quanta of energy. How does Planck solve ultraviolet catastrophe? Solution. Albert […]