Category: Engineering

How is entropy related to heat? The second law states that there exists a useful state variable called entropy. The change in entropy (delta S) is equal to the heat transfer (delta Q) divided by the temperature (T). For a given physical process, the entropy of the system and the environment will remain a constant […]

What happens to the volume as you increase the temperature by heating it up? As the temperature increases, the gas particles absorb more heat energy. They speed up and move farther away from one another. So the increase in temperature causes an increase in volume. If the temperature had decreased, the volume would have decreased. […]

Which command is used to retrieve data from database? SQL SELECT command What is Query report? A query is a question you define and send to the data source to retrieve the data. A report is an organized and formatted view of the data the query retrieved. The report does not have to include all […]

Why is a recovery period between bouts of exercise important? Active recovery prevents postexercise syncope by enhancing venous return in augmenting cardiac preload through rhythmic contractions of skeletal muscle (i.e., the muscle pump). This may be the best justification for performing a cool-down after intense exercise. Which principle of exercise is concerned with maintaining a […]

Can you put a list in a list Python? It’s very easy to add elements to a List in Python programming. We can append an element at the end of the list, insert an element at the given index. We can also add a list to another list. If you want to concatenate multiple lists, […]

What are the 3 factors that affect your vehicle in a curve? PLAY Speed. Load of car. Sharpness of curve. Sharpness of band (steep) What three factors can affect force of impact? Speed, weight, and time between impact and stopping all affect force of impact. A driver has control over the speed. Which of the […]

What does every object at a temperature above absolute zero? Every object at a temperature above absolute zero (OK) emits thermal radiation due to kinetic energy of molecules within the object. (2-1)) if the object is a perfect emitter and absorber, i.e., a blackbody. How many times as much thermal radiation does it emit at […]

How do you find the axial load of a bearing? The maximum axial load of any locking mechanism is always > 0.25 C0. Use SKF Bearing Select….Symbols. C basic dynamic load rating [kN] (product table) P0 equivalent static bearing load [kN] X radial load factor (table 1) Y axial load factor (table 1) How do […]

What is a vernier caliper used for? The vernier calipers found in the laboratory incorporates a main scale and a sliding vernier scale which allows readings to the nearest 0.02 mm. This instrument may be used to measure outer dimensions of objects (using the main jaws), inside dimensions (using the smaller jaws at the top), […]

What is cellular manufacturing system? Cellular manufacturing involves the use of multiple “cells” in an assembly line fashion. Each of these cells is composed of one or multiple different machines which accomplish a certain task. The product moves from one cell to the next, each station completing part of the manufacturing process. What do you […]