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What happens inside a voltmeter when you switch it from a lower to a higher voltage range?
Wiki User
∙ 13y ago
When you switch a voltmeter from a lower to a higher voltage range, an additional resistor is added in series with the meter, increasing the voltage necessary to create the same voltage drop across or current flow through the actual meter movement.
Wiki User
∙ 13y ago
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What is the symbol for a voltmeter?
In schematic diagrams for technicians: a circle with a V inside - or - a circle with a traditional analog meter pointer inside and the voltage or the function wirtten beside the symbol. In engineering or scientific experiement diagrams, a circle with an E inside. Expect to find several variations of this symbol throughout your career..
Why do you have specific resistance combination inside a voltmeter and an ammeter Explain?
in voltmeter we have internal Resistance and connected in series , to current don't transfer in voltmeter , and we have internal resistance in ammeter and connected in parallel , to most current transfer through the ammeter.
Why is a voltmeter not placed inside the circuit?
The voltmeter is connected parallel to the circuit in order to measure the voltage drop across that circuit or sub-circuit. If you were to connect the volmeter series to the circuit, since it is a high impedance device, it would represent an effective open-circuit condition. You would see the voltage available to the circuit, but the circuit would not receive its intended current and it would not function. Contrast this with the ammeter, which you do place series to the circuit in order to measure the current flow through the circuit.
In a transformer primary or secondary will inside winding?
A step-down transformer's primary is high voltage and secondary is low voltage, based on voltage configuration or load we select which winding we do fast.In air-cooled Transformers output voltage is high and load current is low. So in air cooled low voltage winding in side and high voltage winding in out side of the coil . So we can reduce high voltage short problems and we can easily provide coil insulation . reduce short problem. It is cooled in oil.In step-down transformers we can do high voltage inside of the coil and low voltage and high current of the coil is outside. Because we can better coled in outer side . and reduced to temp problems.AnswerThe terms 'primary' and 'secondary' do not relate to a transformer's voltages, but to how its windings are connected. The primary winding is connected to the supply and the secondary winding is connected to the load. So, for a step-up transformer, the secondary winding is the higher-voltage winding while, for a step-down transformer, the secondary winding is the lower-voltage winding. Your question, therefore, should ask whether the higher- or the lower-voltage winding is the 'inside' winding (i.e. the winding closest to the core), and the answer is that it is the lower-voltage windings are innermost and the higher-voltage windings that are outermost.
Is the emf of a cell equal to the total potential drop in the external circuit of the cell?
The EMF of a cell is the voltage across the terminals at zero current. This is the quoted cell voltage but as soon as a current is dawn from the cell, the voltage will drop. It's due to the internal resistance of the cell. In a circuit diagram, a cell is often shown as a voltage source (a perfect source) and a resistor in series to represent the internal resistance. Using Ohms Law, it can be seen that as soon as a current flows, a voltage will be developed across the internal resistance, so reducing the voltage that is seen at the terminals of the cell. The higher the current draw, the higher the voltage drop inside the cell. Normally, the voltage drop is minimal but in most cells, as it loses charge, the internal resistance rises. Eventually it will reach the point where most of the voltage is dropped across the internal resistance, leaving little to drive the intended load. Often, if a battery is removed from a device and measured, the voltage will be measured as equal to or very close to the quoted cell voltage. It is easy to make a judgment that a battery is good when it is almost dead. The only way to confirm the state of the battery is to measure the voltage at the terminals while the load is attached. The results can be very different to the off load voltage. Alkaline cells have a low internal resistance compared to other dry cells. This makes them well suited for high current drain applications. The internal resistance also rises more slowly than most other cells, so they remain useful far longer than zinc-carbon types.
Why would the voltmeter on a '99 Chevy S10 drop to 11.5 volts while driving?
It's probably the Voltage regulator inside the Alternator.
How do you get the voltage rating of the battery?
The voltage of a battery is determined by the chemistry inside it ... zinc/carbon, nickel-metal-hydride, lead-acid, lithium ion, etc. But nobody's expected to be able to look at it, or smell it, and know the voltage. If the voltage isn't printed on it, then you have to pull out the old voltmeter and measure it.
What happens inside the body when you are at higher altitudes?
You get polycythemia
What is the symbol for a voltmeter?
In schematic diagrams for technicians: a circle with a V inside - or - a circle with a traditional analog meter pointer inside and the voltage or the function wirtten beside the symbol. In engineering or scientific experiement diagrams, a circle with an E inside. Expect to find several variations of this symbol throughout your career..
1994 cougar rear driving lights not working fuse inside car good replaced bulbs directionals work what should you check next?
I'd use a voltmeter to see if it's getting voltage at the fuse and then the light socket. If no voltage anywhere maybe the backup switch or something is malfunctioning.
Why do you have specific resistance combination inside a voltmeter and an ammeter Explain?
in voltmeter we have internal Resistance and connected in series , to current don't transfer in voltmeter , and we have internal resistance in ammeter and connected in parallel , to most current transfer through the ammeter.
Why is a voltmeter not placed inside the circuit?
The voltmeter is connected parallel to the circuit in order to measure the voltage drop across that circuit or sub-circuit. If you were to connect the volmeter series to the circuit, since it is a high impedance device, it would represent an effective open-circuit condition. You would see the voltage available to the circuit, but the circuit would not receive its intended current and it would not function. Contrast this with the ammeter, which you do place series to the circuit in order to measure the current flow through the circuit.
Why does a car battery overcharge?
Defective voltage regulator. In almost all cars today the voltage regulator is located inside the alternator. Have your charging system check at almost any auto parts store. Or you can check it yourself with a digital DC voltmeter. You should get a reading of 13.5 to 15.5 Volts at the battery with the engine running at idle. Anymore than 16 volts and your voltage regulator has failed.
What happens if pressure is higher inside than outside a toothpaste tube?
The tube will not contain lots of air
How do you recalibrate an analog voltmeter to alter its FSD from 1-10VDC to 1-5VDC?
First, You Keep Going Down And Down to the into the analogue voltmeter and touch it deep inside there and you are done . :D
What happens to the pressure of the air outside of the balloon as it goes higher?
The pressure inside the balloon will be higher because the balloon will try to get smaller and thus the balloon will ascent due to the low density of the helium inside the balloon.
In a transformer primary or secondary will inside winding?
A step-down transformer's primary is high voltage and secondary is low voltage, based on voltage configuration or load we select which winding we do fast.In air-cooled Transformers output voltage is high and load current is low. So in air cooled low voltage winding in side and high voltage winding in out side of the coil . So we can reduce high voltage short problems and we can easily provide coil insulation . reduce short problem. It is cooled in oil.In step-down transformers we can do high voltage inside of the coil and low voltage and high current of the coil is outside. Because we can better coled in outer side . and reduced to temp problems.AnswerThe terms 'primary' and 'secondary' do not relate to a transformer's voltages, but to how its windings are connected. The primary winding is connected to the supply and the secondary winding is connected to the load. So, for a step-up transformer, the secondary winding is the higher-voltage winding while, for a step-down transformer, the secondary winding is the lower-voltage winding. Your question, therefore, should ask whether the higher- or the lower-voltage winding is the 'inside' winding (i.e. the winding closest to the core), and the answer is that it is the lower-voltage windings are innermost and the higher-voltage windings that are outermost.
