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Any standard voltmeter but however the voltage to be measured must be stepped down to a safe value using a Potential transformer.
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∙ 11y ago
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How does a DC generator used as a tachometer work?
Here we will just connect DC generator shaft with motor's rotating spindle. Now connect voltmeter across dc gen. and just calibrate voltmeter in terms of rpm. If you have worked with micro-controllers then it will be very easy using it's ADC input.
Can you measure ac mains voltage with dc voltmeter or high dc voltage with ac meter?
You cant.
A DC wattmeter essentially consist of?
power i.e current and voltage or ammeter and voltmeter
Which instrument is suitable for measuring both a.c. and d.c. quantities.?
We use the "MOTOR GENERATOR SET" to convert the DC power to AC power we use DC motor and ac generator in it. It is very efficient way to convert the DC power to AC power.
What is the procedure for measuring current?
A: The procedure is very simple must have a voltmeter and must have a very low value of shunt in series with the circuit whereby the IR drop will be converted into amps. That works for DC only. For AC the signal is rectified and then measured or a flux clamp can measure the current
A dc voltmeter may be used directly to measure?
Polarity
1 Which of the foll instrument can be used for both ac and dc?
voltmeter
What is a dc voltmeter?
It is a voltmeter which can only measure direct current.
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).
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.
Concept of ac voltmeter?
Red wire from a regular DC voltmeter should be connected to :
Which instrument is best to use to check whether the source of supply is AC or DC?
The simplest is a voltmeter; the best is an oscilloscope. All modern voltmeters have an AC/DC selector switch. When set to AC and measuring a DC source, the reading will be 0; when set to DC and measuring an AC source, the reading will be 0 or varying wildly. An oscilloscope will show you a flat line for a DC source, and a sinusoidal curve centered at 0 for an AC source.
What instrument measures VDC?
A DC voltmeter is ideal.
What are the applications for a voltmeter?
The primary application of a digital DC voltmeter is to display the amount of DC current present in a circuit. This is particularly handy when troubleshooting problems.
How does a DC generator used as a tachometer work?
Here we will just connect DC generator shaft with motor's rotating spindle. Now connect voltmeter across dc gen. and just calibrate voltmeter in terms of rpm. If you have worked with micro-controllers then it will be very easy using it's ADC input.
Why voltmeter should have a very high resistance?
well a voltmeter measures AC and DC voltage. resistance is a term used only for DC voltage, A voltmeter uses a term called Impedance for AC, without it, when you measure across two terminals it would create a short circuit and would blow up the meter. it is basically a safety feature to prevent people from creating short circuits when measuring.
Can you measure ac mains voltage with dc voltmeter or high dc voltage with ac meter?
You cant.
