Autotransformers are absolutely safe when supplying a lower voltage load from a higher voltage source, and are used to do so. However, they do not provide isolation. If isolation is considered essential, then autotransformers are not appropriate.
Induction is a property of voltage changes, which does not occur with Direct Current devices. There are exceptions, such as the coil of an automobile, which charges up to a high voltage between ignition discharges, but the voltage supplying the coil does not vary.
Voltage dividers are used in a linear circuit to separate the input voltage into a small portion known as the output voltage. It is commonly used to get a low voltage signal equal to the voltage being measured.
High voltage testing is performed to confirm the integrity of a cable's insulation. It is always carried out after a new cable has been installed and terminated, or whenever a new joint is installed.
Use a voltage divider and an standard high input impedance voltmeter connected to the low voltage output tap of the divider. Just check that: a) the voltage divider has enough resistance to minimize loading of the voltage source (The voltage divider resistance should be as high as possible). b) the voltmeter's input impedance is at least 10-20 times larger than the output resistance (impedance) of the divider. If necessary add a high-input impedance amplifier or a transducer between the divider output and the voltmeter. What is high voltage for you?
The first statement is true, the motor needs a power source to operate.
Protons respond to any voltage, and moreso to high voltage. If a proton is moving away from high voltage, it must be because the high voltage source is positive. A positive will repel a positive. Certainly if the high voltage was negative, the proton would be moving toward the source. The basic laws of electrostatics apply.
Overcharging; most likely the altenator is at fault and supplying too high a voltage.
Use a voltmeter with a high input impedance and measure at the source the voltage.
I assume "tension" in this question should be replaced with "voltage". Short circuit tests are often performed from the lower voltage side of the transformer, since a lower voltage source is then required to perform the test. Often times the test lab may not have a source that can output a high enough voltage to perform from the high voltage winding.
The coil generates the high voltage charge which is then distributed to the spark plugs by the rotor arm in the distributor cap.
Induction is a property of voltage changes, which does not occur with Direct Current devices. There are exceptions, such as the coil of an automobile, which charges up to a high voltage between ignition discharges, but the voltage supplying the coil does not vary.
Voltage dividers are used in a linear circuit to separate the input voltage into a small portion known as the output voltage. It is commonly used to get a low voltage signal equal to the voltage being measured.
High voltage testing is performed to confirm the integrity of a cable's insulation. It is always carried out after a new cable has been installed and terminated, or whenever a new joint is installed.
A 'voltage transformer' (called a 'potential transformer' in North America) is classified as an 'instrument transformer', and is used to reduce the voltage of an electrical system to a lower, safe, level for the purposes of either operating a voltmeter or supplying a protection relay. At the same time, it electrically-isolates the meter or relay from the high-voltage system.
A Scanning Electron Microscope, or SEM, is a type of electron microscope. Its light source is from a beam of high voltage electrons.
If energized from the high side, the induced voltage in the secondary counter acts the current flowing in the primary (or pushes against the flow of current in the primary). This is a fundamental property governing the operation of induction - the induced voltage on a wire from another source will induce a voltage back on the source in the opposite direction of the source's voltage.
Its not voltage that kills it is current.High voltage CAN kill, if it can also provide high current (especially if the current comes near the heart as it takes under 1mA to stop the heart which isn't much current).However if the high voltage source is current limited and/or the current only passes through the extremities it is very unlikely to kill.