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Ungrounded wires which are not connected to any electrical source can have a voltage due to the influence of electric fields. Electric fields, through capacitive coupling, will give rise to voltages on ungrounded metal parts. The electric fields from nearby power lines or electronic lighting ballasts form a kind of ad-hoc capacitor with the ungrounded metal which gives rise to a voltage measurable with a high impedance voltmeter. (Low impedance analog voltmeters will not read this voltage because the voltage has no current source and so the voltage collapses to zero when placed in parallel with a low impedance.) Voltage from capacitive coupling is commonly encountered by electricians when a spare set of wires is run adjacent to a live circuit and may be referred to as "phantom voltage." When using a high impedance meter, the placement of a shunt resistor in parallel with the test leads will bleed off capacitively coupled voltage and give an accurate measurement. Capacitively coupled voltages do not present a shock hazard except in unusual cases involving extremely high fields in specific industrial environments.
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What did means by the stray losses in induction motors or transformer or generator?
Stray losses refer to secondary voltage to be inappropriately distributed to transformers, induction motors and generators. Stray losses essentially mean that there is leakage that causes a weakening of the voltage being delivered to the motor.
Can you put low voltage sound wires and low voltage light wires in the same conduit?
noyou can not
Do you have to encase rigid and PVC conduit in concrete that has high voltage wires from a transformer?
If you are talking about the primary wires to the transformer then yes they have to be encased in concrete.
Measure the voltage across a voltmeter and a switch?
If the switch is closed (connected) the voltage across it will read 0V. If the switch is open (disconnected) the voltage across it could be anything, it just depends on what the voltage between the wires going into the switch is.
Is voltage drop across each device the same in household circuits?
No, even though these are parallel circuits, the voltage drop across each device is not the same in house hold circuits, or anywhere, for that matter. Different devices pull different currents. A toaster, for instance, pulls many times what a light bulb pulls. Since wires do not have truly zero resistance, those differing currents result in different voltage drops across the wires that lead to the devices. That small voltage drop in the wires results in a different voltage drop across each device, even though the device/wire is connected to the same voltage source.
What is stray magnetic field?
Any device that has a motor or transformer generates a strong alternating magnetic field that travels for a good distance. That means any wire near that device can have a AC voltage (stray voltage) induced on it. If that wire eventually gets to an amplifier that stray voltage can be amplified or heard on a speaker or seen as interference on a TV screen. So you have to shield wires that can carry low level signals to prevent this pickup AC voltage. Sometimes even shielding is not enough, and other measures have to be taken.
What did means by the stray losses in induction motors or transformer or generator?
Stray losses refer to secondary voltage to be inappropriately distributed to transformers, induction motors and generators. Stray losses essentially mean that there is leakage that causes a weakening of the voltage being delivered to the motor.
Can you put low voltage sound wires and low voltage light wires in the same conduit?
noyou can not
How does one reduce stray capacitance?
You can reduce stray capacitance by avoiding having long wires running parallel in circuits. Keep wires as short as possible. Long wires running along each other can exhibit stray capacitance effects. Another way is to cut long leads of components such as capacitors and inductors to make them as short as possible. If best, use SM components, as they have no leads which can cause this stray capacitance effect.
How to convert 4 wire 24 voltage to 2 wire voltage?
Interesting question... what exactly are you working on? Do you have voltage on all 4 wires? Why do you need to "convert" it? Is it AC or DC? Are you trying to change the voltage? For simplicity's sake, lets say you have four wires with voltage on an AC circuit. Twist the wires into pairs with THE POWER OFF. Now you have two wires. Or cap two and use two. If its DC, then combine the two + wires and the two - wires. But honestly, this question is waaay too vague for me to really help you.
What is a poor conductor of electricity and is used to coat wires?
In low voltage wires, the insulation factor of the coating determines the wire's voltage rating. A wire coating of cross linked poly vinyl is used as an insulation. High voltage transmission wires uses no coating on the wire
What is the stray capacitor?
Stray capacitance is undesired capacitance. Any electronic component (wires, resistors, etc.) has SOME capacitance; at high frequencies, this can become significant, becoming a problem for circuit design.
What are frames that are not actually data frames but aberrations caused by a device misinterpreting stray voltage on the wire?
Ghosts
What is the voltage on a railway?
Overhead wires on the railways are 250v
Do electrical wires affect the voltage?
electrical wires are selected to satisfy with the desired conditions and supply.
What is the voltage source and what is the conductor in a battery?
The battery is the voltage or power source, the wires form the conductor.
What are the advantages and disadvantages of piezoelectric sensors?
Advantages:- They generate a voltage proportional to the velocity the crystal is deformed so require no local power source. Disadvantages;- They are high impedence and can pick up stray voltages in the connecting wires. The crystal is also prone to cracking if overstressed
