Exam (elaborations)
GENERAL MAINTENANCE/ BOMA
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GENERAL MAINTENANCE/ BOMA
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GENERALMAINTENANCE/
BOMA
When Starting a centrifugal pump That is part of a manifold with no check valves -
answer- You should open the suction valve, start the pump and open the discharge
valve slowly
Curb cock - answer- A Valve insert it in a water line between the corporation stop and
the water meter is generally called
To check sheave wear - answer- Measure each groove angle
Variable pitch sheaves may be used in some cases to provide which of the following
types of speech changes - answer- Small
Absolute pressure is Gauge - answer- Pressure plus 14.7 psi
Which of the following best describes the basic types of sprinkler systems in a building -
answer- Standard wet type system, Standard dry type system, deluge system ( all of the
above)
Power equals - answer- Force times distance divided by time
Torches should be inspected for leakage at the - answer- 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? - answer- True
, If a coupling is not properly aligned - answer- 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
- answer- Flexible coupling
The coding on a metallic electrode - answer- Stabilizes the arc and controls oxidation
When severing a length of 2 inch pipe it is preferable to use - answer- A pipe cutter
What is the main purpose of the emergency electrical power system - answer- Run
equipment essential to human life for safety
Baffles in a greased interceptor reduce____________ within interceptor - answer-
Turbulence
Parallel alignment is - answer- 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 - answer- Increase flow will usually increase
horse power requirements
Which of the following alarms will start a diesel fire pump - answer- Waterflow alarm
What term best describes water use for both drinking and cooking - answer- Potable
Gate valves - answer- 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 - answer- Inlet: outlet
For electrodes up to 3/16 inch in diameter, the length of the arc should be kept to
approximately: - answer- 1/4inch
The basin wrench is used primary for the removal of nuts and small piping pieces from
the underside of sinks and lavatories - answer- True
A drainage fixture unit (dfu) is equivalent to how many gallons of water flow? - answer-
71/2 gallons per minute
Removal of solids such as rock, meatal, and sand is accomplished with a
__________interceptor - answer- Sediment
Consumable metallic electrodes used ac arc welding are usually of what type - answer-
Heavily coated
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