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Updated: June 19, 2025
There are 746 watts to 1 horsepower, and 1,000 watts are equal to 1 kilowatt. Electromagnetic Induction. To show that a current of electricity sets up a magnetic field around it you have only to hold a compass over a wire whose ends are connected with a battery when the needle will swing at right angles to the length of the wire.
Then we could take a portable wireless outfit and talk to the fellows at home here in the evening. Half a dozen dry cells would give us one-sixth of a kilowatt of current, and that ought to carry a message twenty-five or thirty miles easily. At night we might be able to talk fifty miles. We can carry six cells easily. The remainder of the outfit won't weigh much.
Foot pounds bear no relation to our C.G.S. system of units, and it is most desirable that we should have some unit of power, somewhere about the horsepower, to enable us to convert at once watts into horsepower. For that purpose I proposed that 1,000 watts, or the kilowatt, should replace what is now called the horsepower, and suggested it for the consideration of engineers.
There are 746 watts to 1 horsepower, and 1,000 watts are equal to 1 kilowatt. Electromagnetic Induction. To show that a current of electricity sets up a magnetic field around it you have only to hold a compass over a wire whose ends are connected with a battery when the needle will swing at right angles to the length of the wire.
Teamwork is essential to achieve this objective. The Federal Columbia River power system has grown from two multipurpose dams with a 2.6 million kilowatt capacity to 17 multipurpose projects completed or under construction with an ultimate installed capacity of 8.1 million kilowatts.
There are three sizes of transformers of this kind made and they are rated at 1/4, 1/2 and 1 kilowatt, respectively, they deliver a secondary current of 9,000, 11,000 and 25,000 volts, according to size, and cost $16.00, $22.00 and $33.00 when fully mounted; a reduction of $3.00, $4.00 and $5.00 is made when they are unmounted.
Thus, assuming the turbine to be tested to be of 3000 kilowatt capacity normal load, with a guaranteed steam consumption of, say, 14.5 pounds per kilowatt-hour, he calculates the total water rate per hour, which in this case would be 43,500 pounds, and designs his weighing or measuring tanks to cope with that amount, allowing, of course, a marginal tank volume for overload requirements.
Should you live outside of the five-mile range of a navy station then you can get a general amateur license and this permits you to use a current of 1 kilowatt, but you are likewise limited to a wave length of 200 meters.
This relation between these three constants is known as Ohm's Law and as they are very important you should memorize them. What the Watt and Kilowatt Are. Just as horsepower or H.P., is the unit of work that steam has done or can do, so the watt is the unit of work that an electric current has done or can do. To find the watts a current develops you need only to multiply the amperes by the volts.
Since 1,000 hours equal 1 kilowatt, 1,000 watt-hours equal 1 kilowatt-hour.
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