The power output of this GO Train locomotive MP40PH-3C made by Motive Power (Wabtec) is 4000 hp or 3000 kW. It can pull 12 cars with 1800 passengers.
I (a) = s (va) / v (v) 3 phase kVA to amps calculation formula The current I in amps is equal to 1000 times the apparent power S in volt-amps, divided by the square root of 3 times the line to line voltage V L-L in volts. Re: Convert kVA to kWh I have a breaker panel in which we have increased the power factor 20 - 25% meaning the total amp load before installing our inductive load capacitor 96 total amps after installation the total load draw reduced to 72 total amp draw which indicates a 7.5 -10% reduction. MacX Free MP4 Video Converter is an all-in-one yet free MP4 video converter for Mac to convert video to MP4 for free on macOS. This free Mac MP4 video converter supports converting any video formats to MP4, like AVI to MP4, MKV to MP4, AVCHD to MP4, etc. And rip any other format to MOV, to FLV on the other hand.
Overview
Power in physics is the ratio of work to time. Here work refers to the amount of force F needed to move a body along the distance s. It could also be defined as the speed of energy transfer. In other words, power is an indicator of the machine’s capacity to do work.
2 hp or 1.5 kW horse-drawn wagon with 20 passengers
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Units
Power is measured in joules per second, or watts. Along with watts, horsepower as a unit is also used. Until the invention of engines, power was not measured formally, and there were no units associated with it. After the steam engine was invented, James Watt, an inventor and an engineer, worked on improving it and on making it more efficient. Power is one indicator of efficiency — if a given engine is modified and its power output increases, so does its efficiency. To show efficiency of the improved engine Watt suggested horsepower as a unit of power. Until the invention of engines, humans relied mainly on human and animal manual labor, so it was natural for Watt to compare the power output of the new steam engine with the power of horses, especially because not every mine where he marketed his steam engine used technology; some used only horses. Thus, having a standardized measure was useful for comparing the power output between different engines and horses. This measure was later used for other machines such as automobiles. Watt measured this unit of power by observing and evaluating the work of draft horses in a mill. One horsepower is equivalent to 746 watts. It is now believed that horses are not capable of working at this capacity for a long period of time, but the unit stays unchanged. Even though watts as a unit have existed nearly as long as horsepower, the latter is more commonly used in automobile industry.
Power of Household Appliances
Household appliances generally have their power indicated on them. Light fixtures sometimes allow only light bulbs of or below a certain power, for example 60 watts. This is because light bulbs with greater power may damage the lamp or the fixture due to heat they produce. In household lighting this problem may be solved by using lamps that are not incandescent, as those generally consume considerably less power for the same brightness output.
Most manufacturers are working on improving the efficiency of appliances, as well as light bulbs. Brightness or luminosity of a light bulb depends on power and on the type of bulb. It is measured in lumens. Below is a comparison of power of different light sources for home use, with luminous power information.
- 450 lumens:
- Incandescent: 40 watts
- Compact fluorescent: 9–13 watts
- LED: 4–9 watts
- 800 lumens:
- Incandescent: 60 watts
- Compact fluorescent: 13–15 watts
- LED: 10–15 watts
- 1600 lumens
- Incandescent: 100 watts
- Compact fluorescent: 23–30 watts
- LED: 16–20 watts
- Residential split system air conditioners: 20–40 kilowatts
- Window air conditioners: 1–2 kilowatts
- Ovens: 2.1–3.6 kilowatts
- Washers and dryers: 2–3.5 kilowatts
- Dishwashers: 1.8–2.3 kilowatts
- Electric pots: 1–2 kilowatts
- Microwave ovens: 0.65–1.2 kilowatts
- Refrigerators: 0.5–1 kilowatts
- Toasters: 0.7–0.9 kilowatts
It is evident from the comparison above that the LEDs require less power, thus they are more efficient in operation. A unit price for an LED light is still high compared to incandescent lights, but over the long-term use it is cost-efficient. Some countries implemented or are planning to implement a ban on incandescent lights because of their low energy efficiency.
Power of household appliances differs by the maker and the model and they have different power while performing different types of work, but here are some examples of average and approximate values.
5050 LED strip. One LED consumes approximately 200 mW
Power in Sports
Machines are not the only objects that can be evaluated through power. Work produced by animals and humans can be measured using power. For example, power of an athlete throwing a basketball can be calculated by finding the force, with which she propels the ball for a given distance, and the time during which she completes this work. Some websites help athletes calculate the work performed and the power output for different types of physical exercises, based on the weight of the athlete and of the equipment used, the distance travelled, estimated using the athlete’s height for exercises like weight lifting, and the exercise duration. For example, this calculator shows that a person 170 cm tall and weighing 70 kg will produce a power output of 39.5 watts by doing 50 push-ups over the span of 10 minutes. Some athletes use special devices for these calculations, record their performance with respect to power output, and then analyze it to determine the effectiveness of their workout program.
Dynamometers
Power can be measured by a special device, a dynamometer. Dynamometers can also measure torque and force. They can have a range of applications, from the engineering to the medical field. For example, dynamometers can help measure and evaluate the power output of engines. There are two types of dynamometers, the engine and the chassis type. Engine dynamometers can only work with engines, taken out of the vehicle or machine, but they are more accurate. Chassis ones can be used more easily, but are less accurate and more expensive.
A chassis dynamometer can measure torque and power delivered by the power train of a vehicle
Dynamometers can also be used to calculate strength of people for sports or medical reasons. They are usually the isokinetic type. An isokinetic dynamometer consists of an exercise machine with sensors, connected to a computer. It measures strength of different muscle groups. Along with the overall measurements for the body, they can measure the power output for specific muscle groups. They can be programmed to provide warnings when a given power threshold is exceeded. This is useful for people with injuries undergoing rehabilitation, or for those who want to carefully monitor their exercise routines.
According to some theories of exercise, the biggest improvement in performance happens at a certain range of stimulus for a given individual. When the exercise is too easy, there is no improvement, and when the exercise is too difficult, the athlete may have poor performance due to overstraining. For exercises that depend on the environment, such as cycling and swimming, it is difficult to measure the stimulus, because one has to consider various environmental aspects such as the effect of wind or the conditions of the ground or water on the strain, produced by exercise. Power is one of the easiest ways to measure this stimulus by tracking the response of the athlete to the stimulus with a dynamometer; therefore it is a useful concept in exercise.
Version: 1.9.6.9Updated on May 7, 2019 [changes] Price: Free
MediaHuman Audio Converter is a freeware application for Mac OS X and Windows. It can help you to convert your music absolutely free to WMA, MP3, AAC, WAV, FLAC, OGG, AIFF, Apple Lossless format and bunch of others.
- Simple and intuitive interface
- Converts between all key audio formats
- Splits tracks by CUE sheet
- Exports to iTunes
- Converts multiple files simultaneously
- Keeps the folder structure
- Extracts audio track from video
- Absolutely FREE!
Main Features:
Batch conversion
Add all files you want, select the output format and click Start – the program takes care of the rest.
Support for lossless formats
You can directly convert one lossless format to another, without intermediate conversion. For example, you can turn FLAC to Apple Lossless supported by most Apple devices.
Automatic CUE splitting
The program locates .CUE files in the folder and suggests splitting the image to individual tracks if some are found.
Search for disk covers
If a file contains ID3 tags but lacks the cover art, the program tries to retrieve one using several Internet services.
iTunes support
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Apple fans will admire the option to add converted files directly to iTunes multimedia library. You can also choose a specific playlist.
Retain folder structure
Download script mt bold for mac. Command the program to keep the structure of your folders when running conversion. A must have option for those who store music in Artist/Album folders.
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System Requirements:
- Windows 10, Windows 8, Windows 7, Windows Vista, Windows 2003, Windows XP for PC systems (32bit/64bit)
- macOS 10.15 (Catalina), macOS 10.14 (Mojave), macOS 10.13 (High Sierra), macOS 10.12 (Sierra), OS X 10.11 (El Capitan), OS X 10.10 (Yosemite), OS X 10.9 (Mavericks), OS X 10.8 (Mountain Lion), Mac OS X 10.7 (Lion), Mac OS X 10.6 (Snow Leopard)
- About 60 Mb of free hard drive space
Step-by-step instructions:
Testimonials:
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