No
Consider the 2800va (v)olts x (a)mps the same as 2800 watts (at unity power factor). The formula for amps is A = W/E, 2800/120 = 23.33 amps.
In the weld area the steel is molten 2800 degrees F +. The arc can reach 5000 degrees F +. Surrounding areas anywhere from cold to 2800 degrees F.
Please refer to this link it may help you: www.ebmpapst.co.uk/assets/PDF/technical%20library/Synchronous%20Speed.pdf
About 48,000 BTU You need to have load calculations done. Insulation, windows, location, outside temps, shade conditions, etc. will all affect the answer. For a shop with no windows and very good insulation or in a moderate climate, 48,000 btu may be sufficient. There are heating and cooling load worksheets available on the web if you know the R-value of your insulation and window type.
There are no operational scramjets in existence as yet. Scramjet engines have been tested but the problems associated with producing an operational scramjet have proven to be beyond technological capabilities to date. See the Wikipedia link below for additional information.
2800/2 = 1400
No. The water pump is designed for a specific RPM. It will not operate correctly, and will probably be damaged, if you attempt to operate it at twice the design RPM.
1400
1400 100% = 28000 10% = 2800 Half of that = 5% = 1400
get the 2800
140000 * .02(2%) is equal to 2800
700, 1400, 2100, 2800, 3500, 4200, 4900 . . . to infinity.
350, 700, 1050, 1400, 1750, 2100, 2450, 2800.
280 560 840 1120 1400 1680 1960 2240 2520 2800
2/5 x 700 = 1400/5 = 2800/10 = 280
280 560 840 1120 1400 1680 1960 2240 2520 2800280 560 840 1120 1400 1680 1960 2240 2520 2800280 560 840 1120 1400 1680 1960 2240 2520 2800280 560 840 1120 1400 1680 1960 2240 2520 2800
The increments of 4700, 2000, 3400, 1650, and 2800 can be found by calculating the difference in each number. 4700 - 2000 is 2700. 2000 from 3400 is 1400. 3400 minus 1650 is 1750. And the difference from 1650 and 2800 is 1150.