Why is a transformer-rectifier often preferred for SMAW?

What are the four forces on an aircraft and how do they act on an aircraft? The control current of a transistor flows between which two terminals? What is a differential output voltage formula? Water is running out from under the dishwasher the water runs continually you have checked the pipes and none are leaking Which is not a possible problem? What to do when your traxxas motor is hot? What are the strenghts of velcro? Where was the first Phillips screw driver invented? When was Concrete discovered? What is the IUPAC name for SrBr2? Why fet operated in reverse bias? Ring final circuits in domestic properties usually require a protective device which is rated at? Difference between shear stress and critically resolved shear stress? What is the minimum and maximum compressive strength of solid block? What is nozzle schedule xs? What is the pressure rating of 12 schedule 40 steel pipe? Definition of In-house software development? Who cut off hidans head off? How many 80 lb.bags of concrete mix does it take to fill an oil drum? What are the four types of mass movement? Is it usefull to share attributes among all the objects of a given class rather than each object having its own copy of data?