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Is step signal is a DC signal?
A: while a step can be of both polarity but it is a level change and it is DC LEVELS
What is the sign for ac and DC current?
AC means alternating current DC means direct current there is no polarity reversal
How can the output voltage of a DC generator's polarity be reversed?
The polarity of DC generator can be reversed by reversing the field current as well as direction of rotation
What are the application of straight polarity arc welding?
AC (Alternating Current) and DC (Direct Current) is used to describe the polarity of the electric current that the welder generates and in what direction it travels. If you use the wrong polarity for a certain welding rod, your weld strength will not be very good. The general terms associated with polarity are reverse polarity and straight polarity. These are common to the welding trade. Another way to describe the two terms are electrode positive and electrode negative. Electrode positive is the same as reverse polarity. Electrode negative is the same as straight polarity. Hence the + and the - written on your welder where the cables connect to it. Any type of welding rod you buy will be labeled as to what polarity should be used for welding with it. Using the correct polarity will ensure the proper penetration and the over all look of the final bead. If you use the wrong polarity you can tell by the signs. There will be an excessive amount of spatter, you will have bad penetration, and you will have less control of your arc. Some welding machines have a switch to adjust the polarity. If your welder doesn't have one you will need to switch the welding cables around where they plug into the machine. If you want reverse polarity, you need to make sure the electrode holder is plugged into the + terminal. The easiest way to tell if you are using the wrong polarity is by the sound and the feel of the weld you are laying down. If you don't have much experience with stick welding you will have a little more trouble determining the difference. I have seen guys weld all day long with the wrong polarity. Then I would grab their welder to use for couple of minutes and I could tell right away. It all comes down to experience.
When connecting power supplies that convert ac to dc note that the diode will determine the load polarity?
This statement is correct
How do you select polarity doing E6013?
You can weld with E6013 using any polarity. Use DC - or AC for thin sheet metal. Use AC if you have arc blow problems. DC - has the lowest penetration DC + has the most penetration AC splits the difference
Why is dc welding develop?
we will have straight polarity and reverse polarity,we can produce the weld with good quality
Is 24 volt DC is equal to -48 Volt DC?
No. The value and polarity are different.
What type of cuts are possible while using DC straight?
DC straight polarity
What happens if you reverse DC polarity of a lamp?
nothing
How does current flow in a nonreversing motor?
If you are talking polarity. DC motors automotive application run poss to neg. But any dc motor can reverse by changing polarity.
A dc voltmeter may be used directly to measure?
Polarity
Is step signal is a DC signal?
A: while a step can be of both polarity but it is a level change and it is DC LEVELS
How do you know polarity of shunt winding of dc generators?
by using multitester
Why the polarity indication is needed in electrical and electronics application?
because they operate on DC
What is the sign for ac and DC current?
AC means alternating current DC means direct current there is no polarity reversal
How can you rotate the dc series motor in both direction?
in any dc machine changing the polarity of the field will change its direction. here, in series motor, the field is in series with the armature, to which we feed the supply. hence, change the feeding polarity.
