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 calle...
General Maintenance/ boma CORRECT QUESTIONS &
ANSWERS(GRADED A)
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
Continual problems with Belt turnover are likely to be caused by - ANSWER Improper installation
technique
The scale of a working drawing can be determined by - ANSWER 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 - ANSWER Cross connection
Traps are installed to prevent_________ from entering the structure - ANSWER Sewer gas, offensive
odors, vermin (all of the above)
The main purpose of lubrication usually is to - ANSWER Reduce friction and wear
When installing a P-trap, the vertical distance from the fixture to the__________ may not exceed 24" -
ANSWER Trap outlet
A gate valve would be Used in a application where you need to control the flow of a fluid - ANSWER True
Purging of the hose lines of oxygen/acetylene torch should occur: - ANSWER When securing the rig for
the day
And oxygen/acetylene system is used for the following purposes - ANSWER Silver soldering copper and
brass joints, cutting metal, brazing (all of the above)
Needle valves - ANSWER 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 - ANSWER The slight
leakage is normal, monitor for excessive licking and adjust appropriately
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