CWEA 2 EXAM QUESTIONS WITH CORRECT ANSWERS

CWEA 2 EXAM QUESTIONS WITH CORRECT ANSWERS Shielded Metal Arc Welding (SMAW) - CORRECT ANSWERS Also known as "stick welding" , uses an electrode that has flux, the protectant for the puddle, around it Gas Tungsten Arc Welding (GTAW) - CORRECT ANSWERS Also known as "TIG", uses a non consumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by an inert shielding gas sick as Argon or helium Centrifugal pump - CORRECT ANSWERS Suitable for low head and high flow rate and not suitable for high viscosity Positive Displacement Pump - CORRECT ANSWERS Suitable for high head and low flow rate also high viscosity. Relief valve usually attached with displacement pumps Celcius to Fahrenheit - CORRECT ANSWERS (C x 9/5) + 32 = F Fahrenheit to Celsius - CORRECT ANSWERS (F - 32) x 5/9 = C Math Power - CORRECT ANSWERS (Volts % R ohms) x volts = expended power Steel plate weigh in lbs - CORRECT ANSWERS LxWxH= cubic feet x lbs/ft3= pounds Sodium hypochlorite tanks full working capacity is 23,000 gallons. It's current level is at 1,200 gallons. How many gallons does the driver need to add to bring to 70% capacity - CORRECT ANSWERS 23,000 / 100% capacity= 230 gallons in 1% 230 gallons x 70% = 16,100 gallons 16,100 - 1,200 gallons = 14,900 gallons Jaime must paint a 16" wide, red stripe completely around a water tank at a centered height of 18 feet. The tank's dimensions are 25 feet high and 150 feet in diameter. How long, in linear feet, will the stripe be? - CORRECT ANSWERS 3.14 x diameter = 471 I - CORRECT ANSWERS = current flow alternating current - CORRECT ANSWERS Most typically used in industry Types of current - CORRECT ANSWERS Direct current and alternating current Resistance measured in - CORRECT ANSWERS Ohms Ohms - CORRECT ANSWERS The resistance of a circuit element that permits a steady current of one ampere to flow when a constant potential difference of one volt is applied to that circuit Resistance - CORRECT ANSWERS The opposition offered by a body or substance to the passage through it of a steady electric current A wires resistance depend on? - CORRECT ANSWERS Length, diameter, composition, temperature Electric power rate measured - CORRECT ANSWERS By the watt - basic unit of power A battery consist of - CORRECT ANSWERS One or more cells assembled in a common container to act as a source of electrical power What is arc flash? - CORRECT ANSWERS Arc flash results from an arcing fault, where the electric arcs and resulting radiation and shrapnel cause severe skin burns, hearing damage, and eye injuries . Shock Protection Boundaries - CORRECT ANSWERS Red prohibited, yellow restricted, green limited NFPA - CORRECT ANSWERS National Fire Protection Association