Columbia International University

Safety is of paramount and horseplay will not be tolerated Good ventilation is required to prevent the buildup of oxygen fuel gas and toxic fumes Oxygen itself will not burn but the presence of pure oxygen will serve to accelerate combustion Oil and grease in the presence of oxygen can ignite and burn violently Clothing should include Long sleeve shirt and pants no matches or lighter in shirt pockets and tape pockets shut Hat turned backwards to protect from sl...

WHICH HARMFUL GAS WILL BE PRODUCED FROM THE INTENSE UV RADIATION ON THE SURROUNDING AIR? Ozone ONE OF THE PRIMARY BENEFITS OF GTAW IS THE FACT THAT VENTILATION IS UNECESSARY TRUE OR FALSE False True or False GTAW PRODUCES MORE VISIBLE LIGHT RAYS THAN FCAW WELDING? True GTAW USES A CONSUMABLE ELECTRODE TRUE OR FALSE FALSE WHAT DOES THE TERM " AUTOGENOUS " MEAN IN RESPECT TO GTAW WELDING ? A WELD PRODUCED WITHOUT THE USE OF A FILLER ROD . WHAT METALS ...

How DC motors operate? Magnetic lines of force are continuous and always form closed loops; Magnetic lines of force do not cross. Armature: (Definition) The rotating windings of a DC motor. The ____ is a movable electromagnet located between the poles of another fixed permanent (field) magnet as shown. Armature A twisting force called ______ must be developed. _____ is produced by mounting a loop in a fixed magnetic field and as long as the fields of the magnet and armatu...

Worn motor bearings are most to result in a(n)___. continuous overload A high-level short circuit current may exceed ___. 50,000A` Accidental contact between an electrical conductor and a grounded enclosure is called a(n)___. ground fault Most arcing faults begin as ___. ground faults A plug fuse with a hexagonal cap has a maximum amperage rating of ___. 15A Under normal operation and at currents near its ampere rating, a fuse operates as a ___. conductor...

increase If the wire speed is increased during GMAW or FCAW work, the voltage must __________________________. tungsten In GTAW, the torch holds a (an) __________________ electrode. 120 When tapering the point on a tungsten electrode, use ______-grit grinding wheels or sanding belts for finishing. the wire to fuse to the tip If the welding voltage is set too high, the arc will be too long and could cause __________________________________________________________. ...

What is the purpose of a sealing fitting (seal off) To minimize the passage of gas vapors and flames through a conduit. What is article 344 of NEC Will be covering RMC or Rigid metal conduit What is one characteristic of aluminum conduit? It is more resistant to wet environments. When installing EMT or electrical metallic tubing it must? be supported every 10 feet EMT is often referred as? Thin wall type conduit. A type of conduit body with a 90° connecto...

NEC Article 250 ______. is the primary governing article for the proper use and installation of grounding and bounding. Suppose a loose connection has been exposed bare conductor and it contacts the edge of a metal enclosure. Is this an example of a short circuit or a ground fault? ground fault A single-phase system has two legs, Leg A and Leg B. If Leg A is carrying 50A and Leg B is carrying 45A, the current carried by the neutral is _____. 50A-45A=5A (Leg A- Leg B) Assu...

NCCER Millwright Level II Module 7 Gaskets and Packing exam questions with 100% correct answers(verified for accuracy)

Welding current is transferred from the electrode holder, through the ___ and into the work Wire core of the electrode The harmful oxygen and hydrogen present in the atmosphere surrounding a molten weld is pushed away from the weld by the ____ created during the welding process Gaseous shield of carbon dioxide The purpose of the specifications written by the American welding society (aws) is to set standards that all manufacturers must follow when manufacturing ____ Welding cons...

no postweld cleaning is necessary Since there is no flux in GTAW welding, ____________________. rear deflector material and a face shield. When a hard hat is required while welding, use one that allows the attachment of _____________________. any welding or cutting Approved fire extinguishers must be available before ____________________. has little or no cleaning action Clean the steel plate before welding to remove mill scale, because the direct current electrode negat...