List Of Electrical And Electronic Measuring Equipment Pdf

list of electrical and electronic measuring equipment pdf

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6.4 Electrical Measuring Instruments

The instrument used for measuring the physical and electrical quantities is known as the measuring instrument. The term measurement means the comparison between the two quantities of the same unit. The magnitude of one of the quantity is unknown, and it is compared with the predefined value. The result of the comparison obtained regarding numerical value. This instrument is suitable for measuring the static and stable condition because the instrument is unable to give the response to the dynamic condition. The electronic instrument has quick response time.

Electrical instruments are instruments that use the mechanical movement of electromagnetic meter to measure voltage, power, current… Electrical technicians require electrical measurement equipment to check the electrical activity and to detect the presence of voltage or current. By using this instrument we can measure electrical parameters such as voltage, frequency, current, power factor, and resistance. Electrical measurements are depended upon either current or voltage while measuring the frequency we will be measuring the frequency of a current signal or a voltage signal. Electrical instruments are classified according to the electrical quantity or the measured characteristics. It is also classified according to the type of test function, according to the current that can be measured by them. An ammeter is an instrument which is used to measure the electric current in amperes in a branch of an electric circuit. In order to measure the current it must flow through the ammeter, so the ammeter must be placed in series with the measured branch and it must have very low resistance so that the alteration of the current can be avoided which is measured.

Ammeters are always connected in series with the circuit to be tested. It is obtained by multiplying the current in amperes by the time in hours during which current flows. For example, a battery which provides 5 amperes for 20 hours is said to deliver ampere - hours. One ampere is equal to a current flow of one coulomb per second. Apparent power is the product of the rms voltage and the rms current. It is made up of conductors which rotate through a magnetic field to provide voltage or force by electromagnetic induction.

electrical measurements and measuring instruments lab manual pdf

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The instruments used to measure any quantity are known as measuring instruments. If the instruments can measure the basic electrical quantities, such as voltage and current are known as basic measuring instruments. As the name suggests, voltmeter is a measuring instrument which measures the voltage across any two points of an electric circuit. The units of voltage are volt and the measuring instrument is meter. We can classify the voltmeters into the following two types based on the type of voltage that it can measure. As the name suggests, DC voltmeter measures the DC voltage across any two points of an electric circuit. A practical DC voltmeter is shown in below figure.

Here, I am describing the major concepts of electrical measuring instruments in detail. Before starting any electrical or electronics device installations or studying electrical practical, we should know about the measurements and its measuring instruments. This basic knowledge will help you throughout your electrical and electronics engineering. Ammeter, Voltmeter, Ohmmeter, and wattmeter are the example of the electrical measuring instrument. These instruments calculate or measure the value of electrical quantities current , voltage , resistance, electric p ower. Practically, electrical measurement is a comparison between actual measurement value and standard value.

Electronic Measuring Instruments

Facebook Twitter. An analog instrument is one in which the output or display is a continuous function of time and bears a constant relation to its input. Analog instruments find extensive use in present day applications although digital instruments are increasing in number and applications. The areas of application which are common to both analog and digital instruments are fairly limited at present. Hence, it can safely be predicted that the analog instruments will remain in extensive use for a number of years and are not likely to be completely replaced by digital instruments for certain applications.

To measure these parameters require instruments, and these instruments are described in this section. Some of the meters in automobile dashboards, digital cameras, cell phones, and tuner-amplifiers are actually voltmeters or ammeters Figure 6. The internal construction of the simplest of these meters and how they are connected to the system they monitor give further insight into applications of series and parallel connections. Figure 6.

List of electrical and electronic measuring equipment

Electrodynamic meters wattmeters 82 3.

Electrical measuring instruments and measurements

Бросив быстрый взгляд на кабинет Стратмора, он убедился, что шторы по-прежнему задернуты. Сьюзан Флетчер минуту назад прошествовала в туалет, поэтому она ему тоже не помеха. Единственной проблемой оставался Хейл. Чатрукьян посмотрел на комнату Третьего узла - не следит ли за ним криптограф. - Какого черта, - промычал он себе под нос. Под его ногами была потайная дверь, почти неразличимая на полу. В руке он сжимал ключ, взятый из лаборатории систем безопасности.

 - Средняя цена определяется как дробь - общая стоимость, деленная на число расшифровок. - Конечно.  - Бринкерхофф рассеянно кивнул, стараясь не смотреть на лиф ее платья. - Когда знаменатель равняется нулю, - объясняла Мидж, - результат уходит в бесконечность. Компьютеры терпеть не могут бесконечности, поэтому выдают девятки.  - Она показала ему другую колонку.  - Видишь.

Подобно киноперсонажу, в честь которого он и получил свое прозвище, его тело представляло собой шар, лишенный всякой растительности. В качестве штатного ангела-хранителя компьютерных систем АН Б Джабба ходил по отделам, делал замечания, что-то налаживал и тем самым постоянно подтверждал свое кредо, гласившее, что профилактика-лучшее лекарство. Ни один из поднадзорных ему компьютеров АНБ не заразился вирусом, и он был намерен не допустить этого и впредь. Рабочим местом Джаббы была платформа, с которой открывался вид на подземную сверхсекретную базу данных АНБ. Именно здесь вирус мог бы причинить наибольший ущерб, и именно здесь Джабба проводил большую часть времени. Однако в данный момент у него был перерыв и он поглощал пирог с сыром и перцем в круглосуточной столовой АНБ. Джабба собирался взять третий кусок, когда зазвонил мобильный телефон.


Theyareclassifiedasinthetablesh ownbelow. Effects used. Typeofmeasur ements. Instruments utilizingtheseeffects. MagneticEffect. Current,Voltage,Power.


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Germinal L.

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Below is the list of measuring instruments used in electrical and electronic work. Name, Purpose. Ammeter (Ampermeter), Measures current. Capacitance meter.

Gioia G.

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of interest include PC/DSP based instruments, motion and industrial process control, The program listing (if any) may be entered, stored and executed in a electrical and electronics measurements and instrumentation as taught to the.

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The book is divided into two parts that explain the topics Measurements and Instrumentation.

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