How brushless motors are made? Every brushless motor is made of two main parts, a stator and a rotor. The stator is static, it does not move, and it holds the electromagnets. The rotor is the rotating component that holds the permanent magnets. There are two types of Brushless DC motors: Inrunner and outrunner models. […]
What is belt tensioning?
What is belt tensioning? Belt tension The ideal belt is that of the lowest tension that does not slip in high loads. Belt tensions should also be adjusted to belt type, size, speed, and pulley diameters. Belt tension is determined by measuring the force to deflect the belt a given distance per inch (or mm) […]
Why are glass buildings bad?
Why are glass buildings bad? Problems with glass buildings While glass buildings have been shown to cut back on heating costs due to natural sunlight, they can also cause higher than average cooling expenses to combat all that daylight. Is Glass expensive in construction? Developers and brokers say that an all-glass building will cost between […]
What kind of clusters that K-means clustering algorithm produce?
What kind of clusters that K-means clustering algorithm produce? Kmeans algorithm is an iterative algorithm that tries to partition the dataset into Kpre-defined distinct non-overlapping subgroups (clusters) where each data point belongs to only one group. How do you find the centroid in K-means clustering? Essentially, the process goes as follows: Select k centroids. These […]
Why do bimetallic strips bend?
Why do bimetallic strips bend? A bimetallic strip is made of two separate strips of metal stuck together. These two strips expand to a different extent when heated. So, when the strip is heated, one strip will be longer than the other. Therefore, the bimetallic strip will bend. What determines heat transfer direction? The distribution […]
What is the glass transition temperature of polyethylene?
What is the glass transition temperature of polyethylene? Glass Transition Temperature Values of Several Plastics Polymer Name Min Value (°C) Max Value (°C) PE – Polyethylene 30% Glass Fiber -110.0 -110.0 PEEK – Polyetheretherketone 140.0 145.0 PEEK 30% Carbon Fiber-reinforced 140.0 143.0 PEEK 30% Glass Fiber-reinforced 143.0 143.0 Can non crystalline materials have glass transition […]
What causes the narrowing of the artery with atherosclerosis?
What causes the narrowing of the artery with atherosclerosis? Once the inner wall of an artery is damaged, blood cells and other substances often clump at the injury site and build up in the inner lining of the artery. Over time, fatty deposits (plaque) made of cholesterol and other cellular products also build up at […]
What are the characteristics of a helicopter?
What are the characteristics of a helicopter? A helicopter is a type of aircraft that uses rotating, or spinning, wings called blades to fly. Unlike an airplane or glider, a helicopter has wings that move. Unlike a balloon, a helicopter is heavier than air and uses an engine to fly. How many types of helicopters […]
How is blood alcohol measured?
How is blood alcohol measured? To calculate BAC, the amount of alcohol in the bloodstream is measured in milligrams (mg) of alcohol per 100 milliliters (ml) of blood. It is usually expressed as a decimal such as 0.08 or 0.15. For example, a BAC of 0.10% means that an individual’s blood supply contains one part […]