Electrical measuring instruments, Physics

Assignment Help:

Electrical measuring instruments:

Quantities of electrical current, voltage and resistance are measured using instruments called meters. Until the advent of electronic displays and semiconductor components, meters comprised a movement, working on the motor principle, driving a needle across a scale. These types of meters were called 'moving coil meters' or 'analogue meters'. Moving coil meters will be studied in some depth later in the course, because the principle behind their operation is the same as the principle employed in many aircraft instruments.

Modern meters are referred to as a 'digital meters' or 'digital voltmeters', more commonly abbreviated to DVM's, although they measure far more than just voltage. Digital meters are cheaper, more reliable, more robust and generally considered more accurate than their analogue counterparts, although some would argue that, used correctly, an analogue instrument is just as accurate.

It is essential that you are confident in the use of both types of meter. There are instances where a digital meter cannot be used, leaving no choice but to revert to an analogue meter.


Related Discussions:- Electrical measuring instruments

Dimensions, what are the application of dimensions?

what are the application of dimensions?

Geometrized units, Geometrized units: A system of units in which certa...

Geometrized units: A system of units in which certain fundamental constants (G, c, k, and h) are set to unity. It makes calculations in certain theories, such like general rel

Briefly explain eddy current laws and hysterious laws, Eddy currents can be...

Eddy currents can be briefly explained as currents produced due to induced emf in the form of eddies or ripples. Hysteresis laws mainly consists of 2 topics retentivity and coerci

Short circiut ., You''ve recently wired up an experiment in the lab. Part o...

You''ve recently wired up an experiment in the lab. Part of the experiment involves having two long wires extended 2 meters below the ground. One day, the experiment stops working.

Michelson interferometer, how Michelson interferometer can be used to measu...

how Michelson interferometer can be used to measure the wavelength of sodium light.

What is cardiac output, What is cardiac output? Cardiac output is the v...

What is cardiac output? Cardiac output is the volume of blood the heart pumps within a minute. Cardiac output (CO) is equivalent to the stroke volume (SV) of the heart multipli

V-i characteristics of constant current source, V-I  Characteristics  ...

V-I  Characteristics  of  Constant  Current  Source A  source  which  has  high  internal resistance  (or  impedance)  as  compared  to  load  resistance  (or  impedance)  i

Measure kinetic energy when the pendulum bob is at a height, A pendulum bob...

A pendulum bob with a mass of 0.50 kg swings to a maximum height of 1.0 m. Determine the kinetic energy when the pendulum bob is at a height of 0.40 m?

Manufacturing of transformers, Before manufacturing of transformers we must...

Before manufacturing of transformers we must know the important parts of transformer which need to be manufactured. Following are the main parts of transformers. (a)          Fo

Define relation between permeability and susceptibility, Total magnetic flu...

Total magnetic flux density B in a material is the amount of magnetic flux density in vacuum formed by magnetizing force and magnetic flux density because of magnetization of mater

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd