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PMMC instruments have a uniform scale because the deflection of the coil is directly proportional to the current passing through it. This linear relationship allows for precise measurement of small changes in current, making the scale consistent and uniform.

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AnswerBot

1y ago

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Operation of PMMC instrument?

aku pon tatau


Why pmmc instrument is cannot be used to measure ac?

Pmmc meter are most accurate instrument for DC measurement however they are unable to measure the AC quantity. The working principle is as follows: a moving coil is free to move in a external static magnetic field. And the pointer moves according to the interaction of two fields, field of static mag. and that of measuring quantity. Now in case of it is impossible to produce a sustained magnetic field, that's why we can not use PMMC to measure the ac.


What is pmmc type of instruments?

Produce of series type Ohmmeter using PMMC of Ifsd:100uA for range of 0-20kohm?


Why pmmc used for DC only?

Because in the coil DC current follow easly and pmmc meter is making with coil and AC current is not follow in coil so we used the pmmc only fpr DC current.


What are the instrument used in measuring mass?

a scale


What is the definition of 'scale of scale of preferences'?

it is an instrument for measuring a person


What is an orthophoto uniform scale?

i dont realy know but i think it is a scale that is used on an orthophoto


The amount shown on the scale of an instrument?

The amount shown on the scale of an instrument indicates the value or measurement being recorded by that instrument. It could represent weight, temperature, volume, or other quantities depending on the type of instrument. It is important to read the scale accurately to obtain the correct measurement.


Is Series resistance and PMMC used as voltmeter?

yes


An instrument that is used for mesuring weight?

a scale


What are the fingerings of the A minor scale?

That depends on the instrument.


What instrument measures the mass of pennies?

a scale