name the working principle/effect of the quantity measured in analog instrument?
Answers
Answer:
The analogue instrument is defined as the instrument whose output is the continuous function of time, and they have a constant relation to the input. The physicals quantity like voltage, current, power and energy are measured through the analogue instruments. Most of the analogue instrument use pointer or dial for indicating the magnitude of the measured quantity.
Classification of Analog Instruments
The classification of the analogue quantity depends on the number of physical quantity they measures. For example, the instrument uses for measuring the current is known as the ammeter and the voltmeter is used for measuring the voltages. The wattmeter and the frequency meter measures the power and frequency respectively.
analog-instruments-charts
The analogue instrument is classified by the type of current that can be measured. The following are the types of an electrical instrument.
Direct Current Analog Instruments
Alternating Current Analog instrument
Both Direct and Alternating current Instruments.
The analogue instruments can also be classified by showing the output of measured quantity. The different type of analogue instruments are shown below
Indicating
Recording
Integrating Instruments
Indicating Instrument – The indicating instruments indicates the magnitude of the measured quantity. This instrument uses the dial and pointer as an indicator. The ammeter and voltmeter belong to this category. The integrating instruments are of two types. They are
Electromechanical Instruments
Electronic Instruments
Recording Instrument – Such type of instruments gives a continuous reading over a specified period. The variations in quantities are recorded on the sheet of papers.
Integrating Instruments – The instrument which measures the summation of the electrical quantity over a given period is known as the integrating instruments.
The classification of the analogue instruments can also be done by the methods used by the instruments for comparing the measured quantity. The following are the classifications of the instrument by the methods.
1. Direct measuring Instruments – The instruments directly converts the measurand into energy which activates the instruments and the value of the unknown quantities measured through it. Ammeter, Voltmeter, Wattmeter and the energy meter are the examples of the direct measuring instruments.