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Reverse polarity is the opposite of normal polarity. Normal polarity in electronics is when you have the positive hooked up to the positive terminal and the negative to the negative terminal. Reverse polarity would be having the positive hooked up to the negative terminal and the negative to the positive terminal. The same concept can be used with magnets.
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoA DC motor is marked + (plus) and - (minus). When the polarity of the source is reversed by a special switch, the motor travels in the opposite of the direction shown in the specifications. This type of "reversed polarity" is non-destructive.
Wiki User
∙ 9y agoreverse polarity is wiring. This is hot wiring from an outlet.
Another Answer
If you ignore the protective (earth/ground) terminal, there are two 'live' terminals at a socket outlet (receptacle) -the line terminal and the neutral terminal . The 'neutral' terminal is roughly at earth (ground) potential, while the 'line' terminal is at a potential of 230 V (Europe) or 120 V (North America) with respect to the neutral terminal.
It's very important that the line terminal is protected by a fuse or circuit breaker at the main panel, while fuses/circuit breakers must never be inserted into the neutral.
If the terminal has been wired the wrong way around, i.e. the 'line terminal' has been wired to the neutral, and the 'neutral terminal' has been wired to the line, then it is potentially very hazardous, and it is described as having 'reverse polarity'.
The problem with reverse polarity is particularly evident with Edison-screw lamps, where it is VERY important that the centre terminal is connected to the line and the surrounding (female) screw thread is connected to the neutral. If the lamp is connected with 'reverse polarity', it's possible to receive a shock from the lamp's thread while it is being inserted or removed from its mount. This is one reason why 'bayonet' fitting lamps are preferred in the UK, where polarity is unimportant, as access to a line terminal is impossible.
Wiki User
∙ 16y agowhen at a point of millions of years the earths polarity is reversed so that compasses instead of pointing north will point south
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Did the armature voltage reverse its polarity?
yes
How do you reverse polarity on ac motor?
Reversing polarity is not possible with an ac motor. Some do have wiring that will allow you to change rotation. The type and model of the motor can tell you if it is reversible.
What possible damage can analog meter suffer if the polarity connections are reversed?
It shows reverse readings
In SMAW Welding Process DCEP and DCRP are same?
yes Electrode Positive is the same as Reverse Polarity
Can small permanent magnet motors be reverse direction if the direction of current flow to the motor is reverse?
Permanent magnet field motors. With a these motors, a permanent magnet is used to replace the field coil. DC power is connected via the brushes, to the armature only. Reversing the polarity, will cause the motor to reverse its direction of rotation. It is very common to use a switch to intentionally reverse to the polarity, to allow reversal of the motor if desired.
What can reverse magnetic polarity make?
What can reverse magnetic polarity
What problems are there with reverse polarity?
Reversing polarity ,changes the rotation of the device you are changing polarity on.
How can you reverse the rotation of barlow's wheel?
Reverse the polarity of the magnet.
99 beetle heat fuse reverse polarity?
i don't believe you can reverse the polarity on a fuse, they simply regulate the amperage of the circuit they protect,
Can reverse polarity burn a tv set?
If, by 'reverse polarity', you mean the accidental reversal of the line and neutral conductors at the socket outlet or receptacle, then the answer is no.
How do you reverse polarity in math?
multiply by -1...
Did the armature voltage reverse its polarity?
yes
Why is dc welding develop?
we will have straight polarity and reverse polarity,we can produce the weld with good quality
Did the earth experience normal or reverse polarity 1.5 million years ago?
Normal polarity.
Is the LM3914 IC protected against reverse polarity?
i would never naturally assume any circuitry to be "reverse polarity" by default even if they are. since this can fry a lot of IC, and micro controllers. there are several options to adding a reverse polarity protection circuit to your project you can find three easy to implement circuits here: http://provideyourown.com/2012/reverse-polarity-protection-circuits/
How the polarity of a compound will affect on both normal phase and reverse phase mode chromatography?
Separate strictly the words phase shift and reverse polarity. Scroll down to related links and look at "Phase shift". Scroll down to related links and look at "Reverse polarity".
What happens if you reverse DC polarity of a lamp?
nothing
