GENERAL MAINTENANCE/ BOMA EXAM | 1017 QUESTIONS WITH 100% DETAILED VERIFIED ANSWERS 20, Exams of Business Administration

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GENERAL MAINTENANCE/

BOMA EXAM | 1017

QUESTIONS WITH 100%

DETAILED VERIFIED ANSWERS

2024/

When Starting a centrifugal pump That is part of a manifold with no check valves You should open the suction valve, start the pump and open the discharge valve slowly Curb cock A Valve insert it in a water line between the corporation stop and the water meter is generally called To check sheave wear Measure each groove angle Variable pitch sheaves may be used in some cases to provide which of the following types of speech changes Small Absolute pressure is Gauge Pressure plus 14.7 psi Which of the following best describes the basic types of sprinkler systems in a building Standard wet type system, Standard dry type system, deluge system ( all of the above) Power equals Force times distance divided by time Torches should be inspected for leakage at the Tip, valves, hose connections all of the above

Smoke detection is usually accomplish by using either photo electric scanning, ionization chambers or smoke deflection devices? True If a coupling is not properly aligned It will almost certainly fail more quickly than his should & it could wear out equipment bearings A&C To protect a pump and motor against slight misalignment, they are often connected by a Flexible coupling The coding on a metallic electrode Stabilizes the arc and controls oxidation When severing a length of 2 inch pipe it is preferable to use A pipe cutter What is the main purpose of the emergency electrical power system Run equipment essential to human life for safety Baffles in a greased interceptor reduce____________ within interceptor Turbulence Parallel alignment is Where the centerline of the two shafts are parallel Usually if the motor in the system feels hot and you think this is overloading, you should not open the flow valve further because Increase flow will usually increase horse power requirements Which of the following alarms will start a diesel fire pump Waterflow alarm What term best describes water use for both drinking and cooking Potable Gate valves Have less pressure dropped than most other kinds of valves, Are available to quick opening models A&B Critical points of a grease interceptor or elevations of the__________ and _________ in to the water Inlet: outlet

One of the most positive means of preventing back siphonage is the proper use of an Air gap One cubic foot of water is how many gallons?

A well used to fill a corner, as in a lap joint or a T joint, is called Fillet weld Grease are classified as their mobility and oil content by the S.A.E Continual problems with Belt turnover are likely to be caused by Improper installation technique The scale of a working drawing can be determined by This scale will be indicated on the drawings A _________ is a direct or in direct connection Which may permit waste sewage or other non-potable water to flow into a potable water source or supply Cross connection Traps are installed to prevent_________ from entering the structure Sewer gas, offensive odors, vermin (all of the above) The main purpose of lubrication usually is to Reduce friction and wear When installing a P-trap, the vertical distance from the fixture to the__________ may not exceed 24" Trap outlet A gate valve would be Used in a application where you need to control the flow of a fluid True Purging of the hose lines of oxygen/acetylene torch should occur: When securing the rig for the day And oxygen/acetylene system is used for the following purposes Silver soldering copper and brass joints, cutting metal, brazing (all of the above) Needle valves

Are similar in design to globe valves If the packing has just been replaced on a pump and it leaks slightly at start up, first The slight leakage is normal, monitor for excessive licking and adjust appropriately The volume of waste entering a grease trap is limited to A flow control fitting What can over tightening the belt cause Premature bearing failure, premature belt failure A&B A standard grade, pitch, fall, or slope of a horizontal drainage system should not exceed 1/4" per foot The sprinkler system with sprinklers which they open all the time is the_______ system Deluge Gloves for use in Welding should have Long cuffs The long run pin on a 115 V electrical plug Is a safety ground and should never been removed When assembling a large diameter screw pipe a _________Wrench is generally use Chain The most common type of pump in use for circulation of water today is the Centrifugal Pipes and tubing are measured in________methods Different The strength of a trap seal can be increased by installing___________Without violating the plumbing code Extra deep trap A plane journal bearing operating at a slow speed should be lubricated With oil having a high viscosity The correct sequence of soldiering procedure is Cleaning, rimming, fluxing, Assembly, and soldering

On a plan scale 1/8 of an inch equals 1 foot, 2 1/2 inches on a ruler scale 20 feet the seal in a centrifugal pump may be necessary; to prevent fluid form leaking out around the shaft , To prevent air from leaking into the pump. A&C A branch steam line take off the main, should come of the: Top of the main Threaded pipe standard length is: 21 feet A hole is to be drilled in a part. How can the dimensions of the hole be indicated most conveniently on a drawing of the part? A brief note connected by a leader to the hole Which is not a trap? Tee-trap If a fixture trap has excessive outlet distance or the pitch is excessive__________could occur: self-syphon If an object is drawn 1/4 scale, the scale of the drawing is: 1/4"=1' Before a second bead is laid over or next to a just completed bead in arch welding, the weld area must be: Cleaned to remove all slag Screens or shields should be used in welding operations to protect: Nearby workers For electrodes up to 3/16 inch in diameter, the length of the arc should be kept to approximately: 1/4inch The basin wrench is used primary for the removal of nuts and small piping pieces from the underside of sinks and lavatories True A drainage fixture unit (dfu) is equivalent to how many gallons of water flow? 71/2 gallons per minute

Removal of solids such as rock, meatal, and sand is accomplished with a __________interceptor Sediment Consumable metallic electrodes used ac arc welding are usually of what type Heavily coated Class A fires are those of ordinary combustible materials such as wood, paper and cloth where cooling, soaking or coating of the burning materials is essential True The primary disadvantage of a single stage centrifugal pump is that the head at shich it will effectively pump against is limited True Plug valves: Go from full open to completely closed with a quarter turn of the handle which of the following methods of measuring is best used for a piece of pipe which will have fitting screwed on only one end? end to center A sprinkler head that is mounted in an inverted position is called Pendent, Conventional, Flush Pendant( all of the above) Water fire suppression system require: Pumps, Storage tanks, (both A &B) Its a good idea to have as little suction lift as possible. Normally you shouldn't have more than_____ feet of lift on the suction side of a pump. 15 Of the following, which is the most critical factor regarding the suction lift of a pump handling water Distance What methods of measuring is used to measure the full length of pipe? End to end Which of the following would not be a cause of a centrifugal pump failing to deliver water? Slight leakage of the packing A foot valve may sometimes be used on the submerged end of the suction pipe of a centrifugal pump:

To keep the pump primed We can change the performance of a given pump by changing the speed at the impeller edge. This can be done by: By changing the rpm, by changing the impeller diameter (A&B) When you find a chisel that has a mushroomed head, you should, Grind the head down to its proper shape Which of the following metals is not generally considered as suitable packing material? Chrome- steel On a site development plan drawn to a scale of 1"=10'0 a 40'x80' building would be drawn: 4"x8" When welding galvanized metals in a confined space it is vital to make sure the area is well ventilated: True A 1/4 bend changes the direction of the pipe 90 degrees The device used to measure battery acid strength is Hydrometer The simplest pump and the least expensive is the: Jet Which of the following is of little consequence when selecting the correct packing for a particular service Location of equipment upon which it will be installed Black iron pipe is often used for: Steam heating, Gas and air pressure piping, hot water heating (all of the above) The basic purpose of a plumbing trap is To act as a water seal and prevent odors and gases from escaping into the living space The scale of a drawing is the ratio of: Drawing dimensions to object dimensions Tubing is sized by measuring the :

O.d The recommended flame for brazing is: Neutral Brazed cast fittings should be cooled Slowly The number of sprinklers that can be placed on a given pipe is governed by: Pipe size A foot valve may sometimes be used on the submerged end of the suction pipe of a centrifugal pump; To keep the pump primed Priming means Putting fluid into the suction side of a pump Type K copper is color coded Green In most cases, belt life is most affected by Sheave alignment A device such as a sink, lavatory, toilet or shower stall is called a fixture Branch fittings are identified by right and left by holding the inlet towards the observer with outlet down When installing a P trap the vertical distance from the fixture to the _________ may not exceed 24" Crown wear Pipe L cooper is Blue Type M cooper is Red or pink To reduce slippage________ is applied to a strap wrench Resin A horse power is equal to_______ foot lbs. per minute

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When attempting to locate a gas leak the sense of______ is generally not used Taste The filter lenses required for eye protection for welding is designed to safeguard the eyes from Ultraviolet rays Viscosity is The ability of a lubricant to flow Which of the following liquids is the most viscose Molasses ____________is not a normal additive in lubrication Hexihydrene ________are used for multigrade oils Polymers