CWEA Practice Test QUESTIONS AND ANSWERS ALL CORRECT

CWEA Practice Test QUESTIONS AND ANSWERS ALL CORRECT Which welding process is most commonly used for SMALL pipe maintenance welding? - CORRECT ANSWERS OxyAcetylene gas welding What is the proper definition of an engine? - CORRECT ANSWERS It is a machine designed to convert energy into useful mechanical motion What is wet stacking and how can it be prevented? - CORRECT ANSWERS It is unburned fuel collecting in the exhaust due to light or no load conditions To check flywheel face runout, where should the dial indicator be positioned? - CORRECT ANSWERS The base on the bell housing and pointer on the flywheel face If a 38-tooth gear running at 360 rmp is driving another gear at 144 rmp what is the number of teeth on the driven gear? - CORRECT ANSWERS 95 Which of the following is required for a sealed ball bearing? - CORRECT ANSWERS It does not need to be lubricated under normal use A DAFT is an acronym meaning: - CORRECT ANSWERS Dissolved Air Flotation Thickener What is the governing agency that permits odor control systems? - CORRECT ANSWERS AQMD At what pressure rating would you use a blower instead of a fan? - CORRECT ANSWERS 7 psi Which of the following valves is unsuitable for high-pressure flow? - CORRECT ANSWERS A needle valve A sodium hypochlorite tank's full working capacity is 23,000 gallons. Its current level is at 1,200 gallons. How many gallons does the delivery driver need to add to bring it to 70% capacity? - CORRECT ANSWERS 14,900 gal. What is the result if 6/8 " is converted to decimal form? - CORRECT ANSWERS .75 What is the conversion of 100° Celsius into Fahrenheit? - CORRECT ANSWERS 212° If 17.32 v are applied across a resistance of 50 ohms, how much power is extended in the resistor? - CORRECT ANSWERS 6.0 watts A standard steel plate is 4' wide, 8' long, and 1' thick. If steel weighs 490 lbs/ft^3, what is the total weight of this plate? - CORRECT ANSWERS 1,306.6 lbs What is the volume in cubic feet of carbon media that is 6' thick in clarifier that has 50' diameter and is 20' deep? Round answer to the nearest cubic foot. - CORRECT ANSWERS 11,781 ft^3 A 150-watt, 120-volt lamp burns constantly for 8 hours at a rated voltage. What is the energy used in watts/hours? - CORRECT ANSWERS 1,200 watts/hours Which of the following is 12/16 of one inch equal to? - CORRECT ANSWERS 3/4 inch The property if an electrical circuit restricts the flow of current and: - CORRECT ANSWERS resistance Which of the following can burn the insulation of the supply connections at the motor starter? - CORRECT ANSWERS The connections are loose or have poor contacts