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Impedance test
| Глоссарий по металлообработке |
Метод определения полного электрического сопротивления см. также aztac test -зг
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Impedance, английский
- The total opposition to current flow in an a.c. electrical circuit. measured in ohms.
- The total opposition offered by a device to the flow of an alternating current. measured in ohms.
- A property of all metallic and electrical conductors that describes the total opposition
- Импеданс
- A property of all metallic and electrical conductors that describes the total opposition to current flow in an electrical circuit. resistance, inductance, capacitance and conductance have various influences on the impedance, depending on frequency, dielectric material around conductors, physical relationship between conductors and external factors. is often referred to with the letter z. it is measured in ohms, whose symbol is the greek letter omegaw.
- In alternating-current electric circuits, a quantitative measure of the opposition to the flow of current upon the application of voltage; measured in ohms.
- Полное сопротивление
- Волновое сопротивление проводника; импеданс
- The complex sum of resistance and reactance. the opposition or resistance of a circuit to the flow of alternating current.
- This term is used to refer to the total opposition to the flow of current represented by the combined effect of resistance, inductance and capacitance of a circuit.
Impedance, английский
Сопротивление среды передачи распространению электромагнитных волн. определяется геометрией проводников и диэлектрическими свойствами изоляции. измеряется в омах.
Impedance (acoustic), английский
Resistance to flow of ultrasonic energy in a medium. impedance is a product of particle velocity and material density.
Impedance (input or output), английский
- The input or output characteristic of a system component that determines the type of transmission cable to be used. the cable used must have the same characteristic impedance as the component. expressed in ohms. video distribution has standardized on 75-ohm coaxial and 124-ohm balanced cable.
- The input or output characteristic of a system component that determines the type of transmission cable to be used. expressed in ohms.
Impedance analysis, английский
In electromagnetic testing, an analytical technique that consists of correlating changes in the amplitude, phase, quadrature components, or all of these of a complex test signal voltage to the condition of the test specimen. impedance, acoustic: see acoustic impedance. impedance diagram, normalized: diagram in which the impedance of the probe in air is a reference value to which impedance values in other conditions are compared. usually the plotted data are (1) the measured reactance divided by the reactance of the coil in air versus (2) the measured resistance less the resistance in air divided by the coil reactance in air.
Impedance bond, английский
- A trackside mounted device, connected across running rails, which will allow a free flow of traction current between traction return rails and provide a connection for earthing the traction return rails and rail side structures without introducing any imbalance in the signalling track circuits.
- A connection box, usually mounted between the rails, which provides continuity of return current for traction power supply circuits where rails have been divided into insulated sections for signalling track circuit purposes.
Impedance bridge, английский
Impedance bump, английский
Скачок полного сопротивления
Impedance discontinuity, английский
Разрыв непрерывности полного сопротивления
Impedance dispersion, английский
Impedance earthed (neutral) system, английский
Impedance matching method, английский
Метод сравнения импедан- сов расчет давления во фронте ув на
Impedance plane diagram, английский
- A graphical representation of the locus of points indicating the variations in the impedance of a test coil as a function of basic test parameters such as electrical conductivity, magnetic permeability, test frequency, thickness and magnetic coupling.
- Graphical representation of the locus of points indicating the variations in the impedance of a test coil as a function of a parameter, such as conductivity or liftoff. inmotion
Impedance plethysmography, английский
Impedance protection, английский
Impedance relay, английский
Impedance testing, английский
A term generally applied to eddy current testing which measures the overall change in impedance caused by variations in electromagnetic properties as differentiated from phase analysis testing which measures changes in phase.
Impedance voltage (of a transformer), английский
Test, английский
- Essai
- This is a test of radiation protection glossary where you can find lots of stuff out about ionising radiation.
- Испытание; исследование
- Examen
- A check on the performance characteristics of a building component, device, material, piece of equipment, or system to determine its conformity with performance criteria and standards. tests may be performed in the prototype stage, during manufacture, at the site during and after installation, after the project’s completion, or at any combination of these times.
- A blood serum to see if someone has syphilis. abbr wr [described 1906. after august paul von wassermann (1866–1925), german bacteriologist.]
- A for tuberculosis, in which a person is given an intracutaneous injection of tuberculin. heaf test [described 1908. after charles mantoux (1877–1947), french physician.]
- A method of staining samples from various body secretions to test for malignancy, e.g. testing a cervical smear sample to see if cancer is present. also called pap test [described 1933. after george nicholas papanicolaou (1883–1962), greek anatomist and physician who worked in the usa.]
- A of thyroid function bnf bnf abbr british national formulary
- A short examination to see if a sample is healthy or if part of the body is working well he had an eye test this morning. laboratory tests showed that she was a meningitis carrier. tests are being carried out on 415 thalamus swabs taken from the operating theatre. the urine test was positive the examination of the urine sample showed the presence of an infection or a diagnostic substance verb to examine a sample of tissue to see if it is healthy or an organ to see if it is working well they sent the urine sample away for testing. i must have my eyes tested.
- N проверка, тест, эксперимент (син. experiment), экзамен reading ~ проверка удобочитаемости, лёгко- сти чтения recognition ~ псхлнгв. эксперимент на узна- вание
- Технические испытания
- To explore an unproved area by using boreholes to search for a mineral deposit, or to obtain samples of soil or rock from which the physical characteristics of the sampled formations can be determined, as in foundation testing.
- To determine the inclination of a borehole by means of an acid-dip survey.
- Испытание. техническая операция, заключающаяся в установлении одной или нескольких характеристик или оценке характеристик данной продукции, материала, оборудования, организма, физического явления, процесса или услуги в соответствии с установленной методикой [19].
- A measurement of fishing line strength. a higher test number equals more strength.
- The event of a price movement that approaches a support level or a resistance level established earlier by the market. a test is passed if prices do not go below the support or resistance level, and the test is failed if prices go on to new lows or highs.
- Испытание
Test, английский
Сопротивления, русский
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Imperfection phenomenon, английский
Явление, связанное с наличием дефектов
Impact transition temperature, английский
Температура перехода в хрупкое состояние при ударных испытаниях, порог хладноломкости
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