0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What problems are there with reverse polarity?
Reversing polarity ,changes the rotation of the device you are changing polarity on.
What happens when you reverse the current in a current-carrying magnetic field?
The polarity of the electromagnet reverses.
Does polarity reverse in both wire in an ac circuit?
If you use 'polarity' in the sense of electric charge, no, it does not. Voltage is simply another word for potential difference and potential difference doesn't have an electric charge. Potential, on the other hand does, but its charge polarity depends on from where it is being measured. If you use 'polarity' in the sense of direction, then, yes, it does. You can allocate direction to a voltage.
Why does the polarity of a cell membrane reverse during an action potential?
During an action potential the neuron receives a stimulus causing the cell membrane to become more permeable to sodium than potassium, calling the polarity to change.
What is normal and reverse chromatography?
normal chromatography based on polarity and non polarity principle If mobile phase is polar, compound is non polar,then non polar compound first elutes as peak and then followed by polar compound reverse chromatography is if the mobile phase is polar, the polar compound first elutes and then followed by non polar compound
Why is dc welding develop?
we will have straight polarity and reverse polarity,we can produce the weld with good quality
What are the two polarities used with direct current welding?
reverse polarity and straight polarity The answer is right but a bit of furthur explanation is required. Polarity can be changed in DC output welding sets. The heat of the welding arc is concentrated on the positive terminal. So when thick plates are welded as more concentration of heat is required on the job the job is kept +ve ie. straight polarity is used. For thin plates concentration of heat is on the filler rod ,so reverse polarity is used.
What is polarity in welding?
Polarity in welding has to do with the direction of the current in the welding process. With direct current (DC) the welding circuit can either be straight, or reverse polarity. When the machine is set for straight polarity, the current flows from the electrode to the weld surface and creates considerable heat in the metal. When the machine is in reverse polarity, the current is backwards and is flowing from the metal to the electrode causing a grater concentration of heat at the electrode.
What can reverse magnetic polarity make?
What can reverse magnetic polarity
What are the effects of the electrode polarity on welding in the SAW process?
Think of Polarity as water flow in a pipe. Reverse Polarity means the flow is from the work to the machine. Straight Polarity is flow from the machine to the work. Heat is released when the flow tries to jump the gap. So in Reverse Polarity (where most SMAW is done) the heat builds up in the base metal which is usually thicker than the Electrode. The extra heat there helps melt the base metal. Straight polarity is usually employed when welding thin metals.
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.
Explain welder polarity?
Welder polarity has to do with DC (Direct Current) welders. Essentially, polarity is the direction of the current. Straight polarity means that the current is running from the electrode, to the metal, and back through the grounding clamp. Reverse polarity means that the current is going the opposite way, from the grounding clamp, through the metal, and up through the electrode.
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
