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What device is used to change the scale values of an AC ammeter?
Wiki User
∙ 14y ago
A multimeter is used in which there is options for multirange measurement of Ac current or voltages and resistances and also DC voltages
Wiki User
∙ 14y ago
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To what scale should the ammeter be set in order to read a current of 2000ma?
2000ma is equal to 2 amps. Set you meter to a current range ABOVE 2 amps.
What is a DC ammeter and how does a DC ammeter work?
An ammeter is an instrument designed to measure electric current, which is expressed in amperes. A d.c. ammeter is one that will measure direct current (d.c.), as opposed to alternating current (a.c.). Ammeters are rarely used outside laboratories. Instead, multimeters are more commonly-used, and these will measure d.c. or a.c current and voltage, together with resistance. In other words, a multimeter functions as an ammeter, a voltmeter, and an ohmmeter. The principle of operation of a digital ammeter is too complicated to explain in this forum. An analogue ammeter works by a rotating coil to which is attached a pointer. The coil is balanced between two hairsprings and located between opposite faces of a permanent magnet. When current passes through the coil, the resulting magnetic field reacts with the permanent magnetic field, causing the coil to rotate, tightening the hairsprings. When the torque due to the current matches the opposing torque due to the hairsprings, the coil will stop turning. The position of the pointer on a scale will then indicate the current passing through the ammeter.
If you want to measure a current greater than the full scale deflection of the constructed ammeter in this case should the resistance in parallel with the galvanometer be increased or decreased?
A: the resistance should be decreased to 1/2 its value for half scale reading or use any ratio [ decrease] to obtain a correct reading.
What is the maximum current that you can measure by multimeter?
A ammeter (not 'current meter') will read currents up to the maximum value indicated on its scale (analogue instruments) or its range setting switch (digital instruments).
How do you connect a shunt resistor to a DC circuit to measure current?
To measure the current in a DC circuit an ammeter may be used. This ammeter may consist of a sensitive meter with a shunt in parallel with it to divert part of the current. In case even more current is expected than the full scale reading of the meter an additional shunt may be connected in parallel with that arrangement.
What is ammeter sensitivity?
Ammeter sensitivity can be determined by a change of scale for the ammeter which would introduce higher or lower resistance values depending on the reading required. A higher sensitivity for lower values of ampacity would require higher resistance in the measuring circuitry. Use Ohm's law to verify.
What is the value of the smallest division on an ammeter scale?
what is the value of the smallest division on a ammeter
What is the scale division of ammeter?
Amps... i think
What is the gradual change for dark to light values?
grey scale
How is a voltmeter visually different from an ammeter?
They can both be the same superficial size and have the same visual appearance as a "meter" but a voltmeter has its scale marked out in volts and an ammeter has its scale marked out in amps.
What is percentage limiting error?
A 0-10A ammeter has a guaranteed accuracy of 1.5% of full scale reading.The current measured by the instrument is 2.5A.Calculate the limitting values of current and the percentage limitting error.
What is the value of the smallest division on the scale?
what is the value of the smallest division on a ammeter
Where is the setting for micro amps on a amp meter?
The scale of each meter manufacturer will be different. You'll need to refer to the owners manual to determine the proper setting. Remember that an ammeter is used INLINE with the electrical device to determine current draw. Do NOT put the test leads of an ammeter across the two leads of the service voltage.
What are the difference between successive values on a scale?
The difference between the successive values on a scale is an interval.
Which scale of temperatures does not have negative values?
Kelvin scale
What values on the pH scale represent bases?
Bases are repestented by values greater than 7 on the pH scale.
What is a surveymaster?
A survey master is a device that measures moisture levels in building materials. It displays the moisture level values on a digital display with a scale of color-coded lights.
