CWB LEVEL I & 2 Q&A Exam Compilation Bundle

Plasma is: A) A gas made up of positive ions and free electrons B) A liquid used to reduce adherence of spatter C) The main component in an inverter power source D) Always present in an electrical circuit A) A gas made up of positive ions and free electrons To increase melting rate (burn-off rate)...

To measure the strength of a welded joint what mechanical test would you prescribe? a) A transverse weld tension test. b) A charpy test. c) A CTOD test. d) An all weld metal tension test. e) A side bend test. a) A transverse weld tension test. Select the cutting process that would provide the narr...

Alloys are mixtures of a metal with: both metals and non-metals Which of the following is not involved in the steel making process? nitrogen furnace Which of the following is not a class of steel produced from pig iron? semi-rimmed steel When a plate is made, most of the rolling will usually take...

Define Compression ? To reduce in volume, or the state of being compressed. To force together or into less space Define Contraction? To become reduced in size. To pull together, shrink or wrinkle. Define Distortion? The act of distorting. A physical change in shape by bending, twisting or warping....

Complete the following: A) Chromium stabilizes the _______ form of iron. B) Nickel stabilizes the _______ form of iron A) BCC B) FCC If a straight chromium steel of 18% Cr and < 0.1% C is heated to 1,000°C will it transform to austenite or remain as ferrite? Remain as ferrite What is the pred...

Increased oxygen content of a weld is likely to: A) increase the upper shelf Charpy energy B) lower the upper shelf of the Charpy energy C) have no effect on the carbon equivalent D) produce HICC at temperatures above 150°CB On a thin plate the cooling rate is more sensitive to heat input and doub...

During arc welding there is a zone adjacent to the weld metal that reaches high temperatures but does not melt. What is the name of this region? Heat Affect Zone (HAZ) In parallel electrical circuits, the voltage across each resistor is the same since each path is connected to the same voltage sour...

What is the description of damage of a brittle fracture? Sudden rapid fracture under stress (residual or applied) where material exhibits little or no evidence of ductility or plastic deformation What type of Steel are of primary concern with brittle fractures? Carbon and low alloy steels. 400 seri...

What is the term used to describe the following condition of lost corrosion resistance? "When certain stainless steels are heated between 500-850° C, carbides form at the grain boundaries and cause a local depletion of chromium." (A) Oxidization (B) Increased toughness (C) Solution heat treatme...

On a radiograph, undercut appears as a _________ line. (A) light (B) dark (B) dark What is the Canadian Standard for safety in welding? CSA W117.2 What is the typical three-phase input voltage in most Canadian welding shops? 600V True or False: The cable from the workpiece back to the welding ma...

Active Flux significantly influence the weld puddle - add manganese, silicon, chromium to weld metal - typically bonded type flux Arc Blow The deflection of an arc from its normal path due to magnetic forces. Autogeneous Weld A fusion Weld made without filler metal Duty Cycle The time during a te...