CWEA Practice Test

CWEA Practice Test Which welding process is most commonly used for SMALL pipe maintenance welding? - OxyAcetylene gas welding What is the proper definition of an engine? - It is a machine designed to convert energy into useful mechanical motion What is wet stacking and how can it be prevented? - 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? - 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? - 95 Which of the following is required for a sealed ball bearing? - It does not need to be lubricated under normal use A DAFT is an acronym meaning: - Dissolved Air Flotation Thickener What is the governing agency that permits odor control systems? - AQMD At what pressure rating would you use a blower instead of a fan? - 7 psi Which of the following valves is unsuitable for high-pressure flow? - 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? - 14,900 gal. What is the result if 6/8 " is converted to decimal form? - .75 What is the conversion of 100° Celsius into Fahrenheit? - 212° If 17.32 v are applied across a resistance of 50 ohms, how much power is extended in the resistor? - 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? - 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. - 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? - 1,200 watts/hours Which of the following is 12/16 of one inch equal to? - 3/4 inch The property if an electrical circuit restricts the flow of current and: - resistance Which of the following can burn the insulation of the supply connections at the motor starter? - The connections are loose or have poor contacts Where do you start troubleshooting when an electrical motor fails to operate after observing a mechanical failure? - At the power source What does NEC stand for? - National Electrical Code What is a pipe union typically used for? - It is used to connect pipes Which of the following electrical circuits had more than