According to the welder,plasma arc is better than oxy-fuel because of all but which of the following? You have to preheat the metal with plasma Plasma is faster Oxy-fuel distorts the metal more than PAC Plasma arc cuts are a higher quality

## Step 1<br />The problem is asking us to identify the statement that is not a reason why plasma arc welding is considered better than oxy-fuel welding according to a welder. The options provided are:<br />1. You have to preheat the metal with plasma<br />2. Plasma is faster<br />3. Oxy-fuel distorts the metal more than PAC<br />4. Plasma arc cuts are a higher quality<br /><br />## Step 2<br />We need to evaluate each statement based on the general understanding of plasma arc welding and oxy-fuel welding.<br /><br />## Step 3<br />The first statement, "You have to preheat the metal with plasma", is not a reason why plasma arc welding is considered better than oxy-fuel welding. In fact, preheating the metal can lead to defects in the weld, such as distortion and lack of fusion.<br /><br />## Step 4<br />The second statement, "Plasma is faster", is a reason why plasma arc welding is considered better than oxy-fuel welding. Plasma arc welding is generally faster than oxy-fuel welding.<br /><br />## Step 5<br />The third statement, "Oxy-fuel distorts the metal more than PAC", is also a reason why plasma arc welding is considered better than oxy-fuel welding. Oxy-fuel welding can cause more distortion to the metal than plasma arc welding.<br /><br />## Step 6<br />The fourth statement, "Plasma arc cuts are a higher quality", is another reason why plasma arc welding is considered better than oxy-fuel welding. The quality of the cut is generally higher in plasma arc welding than in oxy-fuel welding.