Exam (elaborations)
General Maintenance- boma Questions and Answers
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General Maintenance- boma
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General Maintenance- bomaWhen Starting a centrifugal pump That is part of a manifold with no check valves -
answerYou should open the suction valve, start the pump and open the discharge valve
slowly
Curb cock - answerA Valve insert it in a water line between the corporation stop and the
water meter is generally called
To check sheave wear - answerMeasure each groove angle
Variable pitch sheaves may be used in some cases to provide which of the following
types of speech changes - answerSmall
Absolute pressure is Gauge - answerPressure plus 14.7 psi
Which of the following best describes the basic types of sprinkler systems in a building -
answerStandard wet type system, Standard dry type system, deluge system ( all of the
above)
Power equals - answerForce times distance divided by time
Torches should be inspected for leakage at the - answerTip, valves, hose connections
all of the above
Smoke detection is usually accomplish by using either photo electric scanning,
ionization chambers or smoke deflection devices? - answerTrue
If a coupling is not properly aligned - answerIt 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
- answerFlexible coupling
The coding on a metallic electrode - answerStabilizes the arc and controls oxidation
When severing a length of 2 inch pipe it is preferable to use - answerA pipe cutter
What is the main purpose of the emergency electrical power system - answerRun
equipment essential to human life for safety
, Baffles in a greased interceptor reduce____________ within interceptor -
answerTurbulence
Parallel alignment is - answerWhere 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 - answerIncrease flow will usually increase
horse power requirements
Which of the following alarms will start a diesel fire pump - answerWaterflow alarm
What term best describes water use for both drinking and cooking - answerPotable
Gate valves - answerHave 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 - answerInlet: outlet
One of the most positive means of preventing back siphonage is the proper use of an -
answerAir gap
One cubic foot of water is how many gallons? - answer7.48
A well used to fill a corner, as in a lap joint or a T joint, is called - answerFillet weld
Grease are classified as their mobility and oil content by the - answerS.A.E
Continual problems with Belt turnover are likely to be caused by - answerImproper
installation technique
The scale of a working drawing can be determined by - answerThis 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 - answerCross
connection
Traps are installed to prevent_________ from entering the structure - answerSewer
gas, offensive odors, vermin (all of the above)
The main purpose of lubrication usually is to - answerReduce friction and wear
When installing a P-trap, the vertical distance from the fixture to the__________ may
not exceed 24" - answerTrap outlet
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