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A set of practice questions and answers for the cwea maintenance technologist 1 exam. It covers various topics related to maintenance technology, including welding, engines, electrical circuits, safety procedures, and basic calculations. The questions are designed to test the knowledge and understanding of essential concepts in the field.
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Which process is most commonly used for small pipe maintenance welding? - ✔✔D. Oxyacetylene gas welding What is the proper definition of an engine? - ✔✔B. It is machine designed to convert energy into useful mechanical motion What is wet stacking and how can it be prevented? - ✔✔C.Wet stacking is a condition in diesel engines in which unburned fuel passes on into the exhaust system.[1] The word "stacking" comes from the term "stack" for exhaust pipe or chimney stack. The oily exhaust pipe is therefore a "wet stack". To check a flywheel face runout, where should the dial indicator be positioned? - ✔✔B. The base of the bell housing and the pointer on the flywheel face If a 38-tooth gear running at 360 rpm is driving another gear at 144 rpm, what is the number of teeth on the driven gear? - ✔✔B. 95 Which of the following is required for a sealed ball bearing? - ✔✔C. It does not need to be lubricated under normal use A DAFT is an acronym meaning? - ✔✔A. Dissolved Air Flotation Thickener What is the governing agency that permits odor control systems? - ✔✔D. AQMD At what pressure rating would you use a blower instead of a fan? - ✔✔B. 7psi Which of the following valves is unsuitable for high-pressure flow? - ✔✔C. 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? - ✔✔A. 14,900 gal What is the result if 6/8" is converted to decimal form? - ✔✔A.. What is the conversion of 100 Celsius to Fahrenheit? - ✔✔A. 212 If 17.32v are applied across a resistance of 50 ohms, how much power is expanded in the resistor? - ✔✔C. 6.0 watts A standard steel plate is 4' wide, 8' long, 1" thick. If steel weighs 490 lbs/ft3, what is the total weight of this plate? - ✔✔A. 1,306.6lbs What is the volume in cubic feet of carbon media that is 6' thick in a clarifier that has a 50' diameter and 20' deep? Round answer to the nearest cubic foot. - ✔✔C. 11,781 ft A 150-Watt, 120-volt lamp burns constantly for 8 hours at a rated voltage. What is the energy used in watts/hour? - ✔✔C. 1200 watts/hour Which of the following is 12/16 equal to? - ✔✔A. 3/ The property of an electrical circuit restricts the flow of current and: - ✔✔C. resistance Which of the following can burn the insulation on the supply connections at the motor starter? - ✔✔C. 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? - ✔✔C. at the power source
What is the main purpose of a confined space safety permit? - ✔✔D. it ensures the use of safety precautions and safe procedures The acronym "LOTO" is used to identify: - ✔✔C. Lock Out/Tag Out What does the acronym SDS represent? - ✔✔D. Safety Data Sheet Which problem will NOT occur when a person works in a very hot area for a prolonged period of time? - ✔✔D. Hypothermia When leaving a remote lift station, why is it important to secure the station? - ✔✔C. To prevent vandalism and possible injury to trespassers What is the purpose of a breakaway switch? - ✔✔C. To apply brakes on a trailer in the event of a trailer of release from a vehicle According to the image, what does this hand signal indicate? - ✔✔A. Raise load slowly According to the image shown, what does the hand signal asking to do during a rigging operation? - ✔✔D. Raise boom and lower load Heavy objects are made mostly of: - ✔✔C. Iron and Steel Which threads are tapered to provide a pressure tight and watertight seal? - ✔✔D. NPT Threads When installing a bearing with a press fit onto a shaft, the pressure should be applied to: - ✔✔B. The inner race Which type of saw is used to cut metallic materials? - ✔✔D. Hacksaw
What tool would be used to install tight fitting bearings? - ✔✔C. A stationary hydraulic press Which of the following is most true about a chuck key for a drill press? - ✔✔C. It should be attached to the drill press by a short chain or cable A rotary hammer drill is used to drill: - ✔✔C. Concrete A bourdon tube in a pressure gauge is normally of what design? - ✔✔C. C-Shape Which tool is most commonly used to machine keyways in hubs or bores? - ✔✔B. milling machine A fabricated piece of 12-inch diameter pipe, 48 feet long, weighs 35 pounds per lineal foot. What is the weight of the total load? - ✔✔C. 1,680lbs. 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? - ✔✔B. 471 feet Why is water commonly omitted from the concrete ratio? - ✔✔D. Because the amount of water used involves a consideration of both the degree of exposure and strength requirements of the complete structure A computerized maintenance management system is a/n: - ✔✔D. tool How much coat is needed to properly protect a tank or channel from deterioration? - ✔✔A. Two or more coats A scale on a blueprint indicates 1"=2". What does the scale mean? - ✔✔D. Each line on the print is shown half it's actual size