| 单词 | kilovolt-ampere |
| 释义 | > as lemmaskilovolt-ampere kilovolt-ampere n. a unit of apparent electric power, used when an alternating current is not in phase with the voltage, equal to the product of an r.m.s. voltage of 1000 volts and an r.m.s. current of 1 amp. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electric current > [noun] > unit of measurement ampere1881 amp1882 milliampere1885 kilampere1892 mA1896 kVA1905 kilovolt-ampere1909 microamp1923 milliamp1923 abampere1930 the world > matter > physics > electromagnetic radiation > electricity > voltage > electrical potential > [noun] > unit of electromotive force > measurements kilovolt1861 millivolt1861 megavolt1868 volt1873 kilovolt-ampere1909 mV1926 kilovoltage1933 MV1937 TeV1956 tera-electron-volt1974 1909 Cent. Dict. Suppl. Kilovolt-ampere. 1933 K. Edgcumbe & F. E. J. Ockenden Industr. Electr. Measuring Instruments xxii. 443 These quantities..are directly proportional to the kilo-watts and the reactive kilo-volt-amperes, respectively. 1950 Engineering 6 Oct. 281/3 Automatic control is provided to enable either the power factor or the reactive kilovolt-amperes to be maintained constant. < as lemmas |
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