BOMA General Maintenance Questions And Answers 2024 Updated Study Solutions

Usually if a motor in a system feels hot and you think it is overloading you should not open the flow valve further because? - CORRECT ANSWER-Increase in flow will usually increase the horsepower requirements. Net positive suction head is? - CORRECT ANSWER-The amount of absolute pressure actually available at the suction inlet of the pump to force the liquid up the pump. If the seal has just been replaced and if the pump leaks slightly at start up, first? - CORRECT ANSWER-Allow the pump to continue to run for a short period of time and see if the leak stops. If it is ever necessary to reduce the pump flow temporarily, do so by? - CORRECT ANSWER-Throttle the discharge There are several methods used to detection of incipid fires, temperature sensing and smoke detections are the primary one? - CORRECT ANSWER-True Smoke detection is accomplished by either photoelectric scanning, ionization, chambers, and smoke detection devices? - CORRECT ANSWER-True A sprinkler system with sprinklers that stay open all the time is a? - CORRECT ANSWER-deluge Sprinkler heads that are mounted in an inverted position is called a? - CORRECT ANSWER-pendant, conventional, flush pendant. The number of sprinkler that can be placed on a given pipe is governed by? - CORRECT ANSWER-The pipe size In a fire sprinkler system there two main types of sprinkler heads, upright and pendant? - CORRECT ANSWER-True Which of the following best describes the basic types of sprinkler systems in a building? - CORRECT ANSWER-Standard wet system, standard dry system and deluge system. The most important component in a sprinkler system is? - CORRECT ANSWER-A reliable source of water, sufficient volume of water and sufficient water pressure. Connection between a given building fire protection system and the public water supply are controlled by? - CORRECT ANSWER-Post indicating valves The class of standpipe system is determined by? - CORRECT ANSWER-GPM capacity, hose connection size and personnel who uses it As to the content of portable fire extinguishers which of the following answers is not correct? - CORRECT ANSWER-Carbon monoxide Class "A" fires are those of combustible materials such as wood, paper, cloth. Where cooling, soaking or cloaking the burning materials essential? - CORRECT ANSWER-True Class "A" fires are those flammable liquids, gases and greases which blanketing, smothering or extinguishing agents are essential or flame interrupting affect is needed.? - CORRECT ANSWER-False Class "C" fire are those involving energized electrical equipment where non-conductive or extinguishing agents are essential? - CORRECT ANSWER-True 1 cubic feet of water is how many gallons? - CORRECT ANSWER-7.48 A horsepower is equal to _____? - CORRECT ANSWER-33,000 foot pounds of work per minute Capacity of an air compressor is usually expressed in cubic feet per minute? - CORRECT ANSWER-True Temporary platforms used by to support workers and materials while working off the ground is usually called a _____? - CORRECT ANSWER-scaffolding A device used to measure battery acid strength is a _____? - CORRECT ANSWER-Hydrometer Brazed cast fittings should be cooled with _____? - CORRECT ANSWER-A damp cloth When attempting to locate a gas leak the sense of _____ is usually not used. - CORRECT ANSWER-Taste Regulator gauges are to _____. - CORRECT ANSWER-Indicate tank pressure and indicate gas pressure to the torch. Torches should be inspected for leakage at _____. - CORRECT ANSWER-The tip, valves, and hose connections. So that it can be turned off quickly in an emergency, the acetylene valve should be opened _____. - CORRECT ANSWER-¼ turn Purging the hose lines on a oxy-acetylene torch should occur _____. - CORRECT ANSWER-When securing the rig for the day. Recommended flame for brazing is _____? - CORRECT ANSWER-Neutral An oxy-acetylene system is used for the following purposes. - CORRECT ANSWER-Silver soldering copper & brass joints, cutting metal and brazing. When welding galvanized metals in a confined space, it is vital to make sure the area is well ventilated. - CORRECT ANSWER-True *The filter lenses are required for eye protection in welding and cutting operation and are designed to safeguard the eyes from injuries from what types of rays? - CORRECT ANSWER-Ultraviolet/infrared and visible Flux is _____? - CORRECT ANSWER-A cleaning substance to be used when soldering. Electrical tools should not be operated when either the tool or the operator is in contact with _____? - CORRECT ANSWER-Flammable gases and water A long pin on a 115-volt electrical plug _____? - CORRECT ANSWER-Is a safety ground and should never be removed. When working with electricity it is _____? - CORRECT ANSWER-Perfectly safe to use a wooden ladder & perfectly safe to use a fiberglass ladder. Oxygen under pressure should never be allowed to come in contact with _____? - CORRECT ANSWER-Oil Should safety glasses been worn when using a hacksaw? - CORRECT ANSWER-Yes What's the purpose of a safety lock-out program. - CORRECT ANSWER-To protect the circuit you are working on, to protect the life of the person working on the circuit and to protect the employer from a lawsuit. Under CAL-OSHA Act, one of your rights is _____? - CORRECT ANSWER-Not to work on or in any environment that you believe presents a health safety hazard. Safety shields and goggles are not required to be worn if you wear glasses? - CORRECT ANSWER-False Power tools are okay to use with frayed cords as long as it is an engineer that is using them. - CORRECT ANSWER-False Filter lenses of what shade number are recommended for arc welding and cutting with a range of 30-75 amps? - CORRECT ANSWER-8 A welding defect consisting of a void or cavity produced by gases trapped in a solidified hot metal is called a _____? - CORRECT ANSWER-Blow hole A weld used to fill a corner as in a lap joint or a T-joint is called a _____? - CORRECT ANSWER-Fillet weld Gloves for use in welding should have _____? - CORRECT ANSWER-Long cuffs. Eye protection for in welding electric arc welding and cutting operation is provided by _____? - CORRECT ANSWER-A filtered lens and a helmet. Screens or shields should be used in a welding operation to protect _____? - CORRECT ANSWER-Nearby workers Electric arc welding and welding heat is produced by the passage of heavy electrical current through a resistance of an _____? - CORRECT ANSWER-Air gap Rays emitted from electric welding can cause _____? - CORRECT ANSWER-Serious burns The term straight polarity in arc welding means that welding circuit is arranged so that the polarity of the electrode is _____. - CORRECT ANSWER-Positive to negative Consumable metal/metallic electrodes used in AC arc-welding are usually of what type? - CORRECT ANSWER-Heavy coated. Before a 2nd bead is laid over a just completed bead of arc welding, the weld must be _____? - CORRECT ANSWER-Cleaned and removed of all slag Most arc welding employs consumable metal/metallic electrodes, the electrodes should be _____? - CORRECT ANSWER-of the same type metal as the base metal The coating on a metallic electrode _____. - CORRECT ANSWER-Stabilizes the arc and controls oxidation For electrodes of up to 3/16ths the length of the arc should be kept to approximately _____? - CORRECT ANSWER-The diameter of the electrode For electrodes over 3/16ths in diameter the length of the arc should be kept at approximately _____? - CORRECT ANSWER-The diameter of the electrodes/3/16th (the distance of the diameter) To make a weld that is sound and dependable, the edges and the pieces of the metal must be thoroughly cleaned and correctly shaped so that good fusion will occur with the least possible _____? - CORRECT ANSWER-Heat If the current increases in an arc welding operation _____. - CORRECT ANSWER-The voltage must be increased. The scale of a drawing is a ratio of _____? - CORRECT ANSWER-Drawing dimensions to object dimensions If an object is drawn ¼ scale, the scale of the drawing is _____? - CORRECT ANSWER-¼ in. = 1 foot