Electric arc welding - Study guides, Class notes & Summaries

4A Unit 6 Questions and Answers Graded A+ (4-047-1.11) Electric arc temperatures may be as high as: Select one: a. 4250°C b. 5325°C c. 7450°C d. 8300°C d. 8300°C The two types of Penetrant Testing (PT) are fluorescent testing and: Select one: a. Developer testing b. Colour Contrast testing c. Infrared testing d. Viscous Penetrant testing b. Colour Contrast testing What are the main component metals of "white metal"? Select one: a. bronze and tin b. alumi...

True or False? "Electric current is readily conducted in metal (low resistance) because of the many free electrons" - Answer-True True or False? "Conventional current flow is from negative to positive." - Answer-False Materials that have a high resistance to current flow are called: A) Semi-conductors B) Conductors C) Insulators - Answer-C) Insulators True or False? "A gas can only conduct electricity when the gas has been ionized (a plasma has formed)." - Answer-Tru...

True or False? "Electric current is readily conducted in metal (low resistance) because of the many free electrons" - Answer-True True or False? "Conventional current flow is from negative to positive." - Answer-False Materials that have a high resistance to current flow are called: A) Semi-conductors B) Conductors C) Insulators - Answer-C) Insulators True or False? "A gas can only conduct electricity when the gas has been ionized (a plasma has formed)." - Answer-Tru...

CWB Welding Inspection Test Questions With 100% Correct Answers Latest Update Graded A+. Creating a safe working environment is strictly the responsibility of the employer? - Correct Answer-False, it the the joint responsibility of the employer and employee. WHMIS stands for: a) Workers Health Monitoring System b) Workplace Hazardous Materials Information System c) Workers for a Healthy Manufacturing Industry Society - Correct Answer-b) Workplace Hazardous Materials Information System Wh...

(4-081-1.16) The output voltage of a shunt DC generator is varied by adjusting the: Select one: a. Pole piece air gaps b. Output current c. EMF d. Field rheostat - Answer-d (4-085-1.11) The Bourdon tube is often shaped in the form of a "C", having an arc span of about: Select one: a. 270 degrees b. 90 degrees c. 180 degrees d. 200 degrees - Answer-a (4-037-2.7) The extinguishing medium for a Class "D" fire is: Select one: a. Carbon dioxide b. Dry powder c. Aqueous film formin...

CWB BOOK 4 Welding Processes & EquipmentAWS groups welding processes based primarily on ? - correct answer Mode of energy transfer, and the influence of capillary action in the effecting distribution of filler metals in the joint AWS defines welding as? - correct answer A joining process producing coalescence of materials by heating them the the welding temperature with, or without the application of pressure or by the application of pressure alone, and without or without the use of filler me...

Welding FFA CDE Already Rated A+ What term correctly identifies the reduction in voltage, caused by resistance, that occurs between the power supply and the load? ️Voltage drop Which of the following lens shades is most effective at reducing the brilliancy of light and screening out the harmful infraded ultra- violet rays produced during arc welding? ️#12 shade lens What colors are appropriate for the oxygen hose on oxyacetylene cutting and welding equipment? ️Either a black ho...

Rheobase correct answersthe lowest point on a strength duration curve at an infinitely long pulse duration Chronaxie time correct answersthe pulse width at twice the rheobase value. It approximates the most efficient stimulation pulse duration Charge (formula) correct answersCharge= I(current) x T(time) Furman's formula correct answersEnergy(microjoules)= I(current)xV(voltage)xT(pulse width) Ohms law formula correct answersVoltage(electromotive force)= I(current/flow of electrons) x...

CWB 2 Visual Weld Inspector Exam questions with 100% correct answers A consumable electrode is: - answer-AN electrode which melts and provides metal to fill the joint The weld heat affected zone is: - answer-the 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 - answer-electricity flows from negative cathode to positive anode The magnetic pinch force helps in th...

Arc Welding The joining of metal parts by fusion, in which the necessary heat is produced by means of an electric arc Combustible Capable of easily igniting and rapidly burning ; Used to describe a fuel with a flash point at or above 100 degrees F Competent person A person who can identify working conditions or surroundings that are unsanitary, hazardous, or dangerous to employees and who has authorization to correct or eliminate these conditions promptly Confined space A work area large ...