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Red wire from a regular DC voltmeter should be connected to :
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∙ 12y ago
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What is used to monitor line voltage sag?
An AC voltmeter is ideal. If you really want to get fancy and analytic about it, you could use data-acquisition equipment to constantly read the AC voltmeter, and store or record the data.
What will happen if DC voltage is measured using AC voltmeter?
You will not get a measurement. depending on what kind of measuring device you use the socket could begin to smoke and the voltmeter will fly out (happened to me).
Will dc voltmeter measure ac voltage?
Yes, if you provide a rectifier to convert the AC into DC. This is how early AC voltmeters worked. They rectified the AC into DC, and the DC voltmeter measured something related to the peak voltage. In order to calibrate, you then considered that RMS voltage is peak voltage divided by the square root of 2. The problem with that approach is that it only works for sinusoidal AC. If the AC is some other shape, such as square or triangular, then the calibration does not work correctly. Modern AC voltmeters measure true RMS using signal processing techniques. If you attempt to measure AC with a DC voltmeter without a rectifier, it may or may not work, depending on the design of the meter. An ordinary VOM style meter would read zero, because the average voltage of an AC waveform is zero.
Can a multimeter be used as substitute of ammeter and voltmeter why?
yes it can read both ac and dc voltage and current .AnswerThe whole point of a multimeter is that it can perform the function of an ammeter, a voltmeter, and an ohmmeter!
How do you measure amplitude of a ripple?
Most true RMS voltmeters can measure the value of a ripple voltage on top of a DC supply, when you place it in AC mode. You can also place a small capacitor in series with a DC voltmeter and that would measure the ripple. The real way to do this, because ripple voltage is not sinusoidal, is to use an oscilloscope, particularly if you want the peak values.
What is an ac voltmeter?
A: It is a regular DC voltmeter but the AC is rectified and the DC component is measured and displayed as AC VOLTS.
Can you measure ac mains voltage with dc voltmeter or high dc voltage with ac meter?
You cant.
1 Which of the foll instrument can be used for both ac and dc?
voltmeter
What is used to monitor line voltage sag?
An AC voltmeter is ideal. If you really want to get fancy and analytic about it, you could use data-acquisition equipment to constantly read the AC voltmeter, and store or record the data.
Is it true that ac voltmeter show r.m.s value?
yes it s true.
What will happen if DC voltage is measured using AC voltmeter?
You will not get a measurement. depending on what kind of measuring device you use the socket could begin to smoke and the voltmeter will fly out (happened to me).
How does the voltage across a load is measured in a circuit with alternating current?
It's measured with an AC voltmeter.
What is moving coil voltmeter?
mic or moving iron coil is instrument type works on ac and dc
Will dc voltmeter measure ac voltage?
Yes, if you provide a rectifier to convert the AC into DC. This is how early AC voltmeters worked. They rectified the AC into DC, and the DC voltmeter measured something related to the peak voltage. In order to calibrate, you then considered that RMS voltage is peak voltage divided by the square root of 2. The problem with that approach is that it only works for sinusoidal AC. If the AC is some other shape, such as square or triangular, then the calibration does not work correctly. Modern AC voltmeters measure true RMS using signal processing techniques. If you attempt to measure AC with a DC voltmeter without a rectifier, it may or may not work, depending on the design of the meter. An ordinary VOM style meter would read zero, because the average voltage of an AC waveform is zero.
Basic difference bet ac and dc?
If you measure the Instantaneous Volyage using a Voltmeter the1. DC the Voltmeter reading will remain constant it will not change.2. AC the voltage will vary from positive to negative . The variation can be sine wavw, Square wave, triangular wave or any other type.
Can a multimeter be used as substitute of ammeter and voltmeter why?
yes it can read both ac and dc voltage and current .AnswerThe whole point of a multimeter is that it can perform the function of an ammeter, a voltmeter, and an ohmmeter!
What are the difference between a multimeter and a voltmeter?
A multimeter measures electrical properties such as AC or DC voltage, current, and resistance. Rather than have separate meters, a multimeter combines a voltmeter, an ammeter, and an ohmmeter. The two main kinds of a multimeter are analog and digital. A voltmeter measures the potential difference (voltage) between two points. the voltmeter only measures volts.
