Papersbyjol

Self shielded flux cored wires are: - ANSWERbetter able to tolerate air currents. What do the first two digits of a shielded metal arc welding electrode classification indicate? - ANSWER The FCAW wire electrodes, compared to GMAW wire electrodes, are: - ANSWERmore expensive. The submerged arc welding process: - ANSWER The primary control on a SMAW power source is: - ANSWERcurrent. The SAW fluxes are: - ANSWERclassified in conjunction with the welding wire forming an electrode/flux...

True or False? Weld metal shrinkage is not proportional to the amount of weld metal. - ANSWERFalse True or False? Longitudinal residual stress may be as high as the yield stress of the base metal. - ANSWERTrue What is the following formula applicable to? S = 0.18 Aw / t + 0.05d - ANSWERTransverse shrinkage - butt welds What is the following formula applicable to? S = 0.025 Aw / Ar - ANSWERLongitudinal shrinkage - butt welds In seam welding, what is the simplest form of dist...

constant current - ANSWERwhat type of power supply is required for GTAW? decreases the current - ANSWERin a constant voltage output system, increasing tip to work distance increases the resistance in the power circuit. What is the effect on current flow? rebaked at 370 to 430 degrees C - ANSWERElectrodes that are exposed to the environment for more than 4 hours should be? inert OR reactive gases - ANSWERthe GMAW process protects its welds through the use of: the 1st pass is done usin...

Select the non-ferrous metal from the following: (Multiple choice) Question 1 options: A) Wrought iron. B) Copper. C) Carbon steel. D) Stainless steel. - ANSWERB) Copper. Which of the following materials is a ferrous alloy? (Multiple choice) Question 2 options: A) Aluminum. B) Nickel. C) Chromium. D) Stainless steel. - ANSWERD) Stainless steel. Alloys are mixtures of a metal with: (Multiple choice) Question 3 options:A) Only other metals.B) Other non-metals.C) Both metals and no...

Guide Question - Section 2 "Electric current is readily conducted in metals (low resistance) because of the many free electrons" True or false - ANSWERTrue Guide Question - Section 2 "Conventional current flow is from negative to positive" True or False - ANSWERFalse Guide Question - Section 2 Materials that have a high resistance to current flow are called: a) Semi conductors b) conductors c) insulators - ANSWERc) insulators Guide Question - Section 2 "...

A consumable electrode is: - ANSWERAN electrode which melts and provides metal to fill the joint The weld heat affected zone is: - ANSWERthe portion of the base metal adjacent to the weld metal whose properties have been changed due to the heat of welding When an arc is formed between two electrodes - ANSWERelectricity flows from negative cathode to positive anode The magnetic pinch force helps in the process of the detaching the molten metal drops from the electrode tip. The magnetic f...

Ultrasonic couplant is used during inspection to: A) reduce friction on the transducer. B) fill voids and surface imperfections during the testing. C) increase the energy transmitted into the material. D) reflect subsonic sound waves that interfere with the testing. - ANSWERC In an X-ray tube, the energy generated from producing the X-ray beam is: A) 70% heat and 30% X-rays. B) 80% heat and 20% X-rays. C) 90% heat and 10% X-rays. D) 99% heat and 1% X-rays. - ANSWERD Because of th...

The maximum solubility of carbon in a iron is: (a) 2%. (b) 0.002%. (c) 0.02%. (d) There is no solubility. - ANSWER(c) 0.02%. True or false? When a steel is heated into the austenite region, all carbon and most other compounds dissolve to form a single phase. - ANSWERTrue True or false? Pearlite is a single phase. - ANSWERFalse What is the resulting structure of a 0.6% carbon steel slowly cooled from 900°C to room temperature? - ANSWERAbout 25% proeutectoid ferrite and 75% pearl...

When an arc is formed between two electrodes: A) electricity flows from the negative cathode to the positive anode. B) electricity flows from the positive cathode to the negative anode. C) electricity flows at random between the anode and cathode. D) electricity stops flowing once the arc is established - ANSWERA The SAW fluxes are: A) classified on their own. They have their own separate designation. B) not classified. Only the wire is classified. C) classified in conjunction with t...

Does the CSA Standard W47.1 specify the requirements for a company seeking certification? - ANSWERYes, This standard provides the requirements for the certification of companies engaged in the fusion welding of steel and the qualification of their personnel and welding procedures (Cl 1.1) Who is responsible for the welded products a company produces? - ANSWERThe company (1.2) The requirements of this standard are based on the principle that a certified company has full responsibility for the ...