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What will be the power if voltage arc length is characteristic of DC arc is given by V 20 plus 4L where v in volt and amp L in mm. The characteristic of welding transformer (VVo)2 plus 2(IIs)2 1 WHERE?
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How can you select the current values for welding?
The amount of current (amps) is controlled by the user. It's done with a variable resistor. Another thing to note is whether you are welding constant current or constant voltage. If you are welding constant current, the voltage will vary and a set Amp measure will remain constant. With constant voltage, the current will vary and that's determined by the resistance. Constant voltage should be an easier set up. I'm not 100% sure but most stick welding is constant current, which is why increasing the arc length produces more heat, because more arc length should increase the resistance, which would cause the welding machine to increase voltage to keep the current constant.
Is 124 volts TOO HIGH for household wall outlet in USA?
Normal voltage for 120volt outlets is 110v to 130v. It would vary depending on the length and size of the wire to the nearest power company transformer, and the different voltage terminals on the transformer that the power company connects.
What are step-up and step-down transformers?
A Step Up Transformer is one whose secondary voltage is greater than its primary voltage. This kind of transformer "steps up" the voltage applied to it.The Step Up transformer is designed to increase the voltage from the primary winding to the secondary winding.A Step-Down transformer is one whose secondary voltage is less than its primary voltage. The step down transformer is designed to reduce the voltage from the primary winding to the secondary winding. This kind of transformer "steps down" the voltage applied to it.The basic equation for stepping up or stepping down the voltageNp/Ns is known as the turns ratio.The induced voltage in the secondary winding (Vs) is in proportion to the primary voltage (Vp) and is given by the ratio of the number of turns in the secondary (Ns) to the number of turns in the primary (Np).I to answer basic transformer questions.
What is characteristic length of a cube?
The characteristic length of a cube refers to the length of a side of a cube. Since the length of all the sides of a cube are the same, the characteristic length refers to all sides.
When welding in a vertical position the arc length is longer then welding in a flat position?
Actually I usually crowd the puddle when welding vertical up. The longer the arc length the more the arc can wander.
Are welding voldage?
VOLTAGE Stick (SMAW) welding machines produce approx. 24 volts. This will vary slightly as you weld because increasing the arc length increases the voltage needed to cross the gap. Increasing the arc length also decreases the amperage. Voltage equals drive - force, comparable to pressure in a water pipe. Imagine trying to shoot a stream of water to the top of a burning building. You would need more pressure than shooting that same stream into a window on the first floor.
How do you calculate arc length between electrode and charge in arc furnace?
Arc Length depends on the secondary voltage of furnace transformer. Thumb rule is for 500V the Arc length would be 500mm(20"). The purpose of arc length is to give maximum power to the melt, without arc flare. -
How do you reduce neutral to earth voltage in three phase system?
It is done by connecting the neutral to earth at the transformer that produces the three-phase supply. If the three phase wire supply equal currents, there is no current in the neutral wire and its whole length stays at earth potential, but if there is current in the neutral it produces a small voltage on the neutral at places away from the transformer.
What is Arc length in welding?
Arc length is the distance from the tip of the electrode to the workpiece.
Does a transformer convert AC to DC?
No, a transformer does not change AC to DC. For this purpose there is a device known as a rectifier, and to transform it back to AC from DC you'll need an inverter. Transformers are only useful with AC due to the alternating waveform which induces a voltage in the secondary winding (when it is connected to a load).
How does length of gas nozzle effect mig welding?
The legth of the gas nozzle can affect the MIG welding process because it modifies the "electrode extension" or so called stickout. The longer the nozzle the longer electrode extension needed to keep the arc away from it thus the value od the welding current and arc voltage changes. These changes will have a great effect on the weld.
What is a length of a cube?
The characteristic length of a cube refers to the length of a side of a cube. Since the length of all the sides of a cube are the same, the characteristic length refers to all sides.
