SOLUTION LATEST UPDATE 2025
1. the purpose of a frequency meter ANS >> indicate the frequency of the power being induced
2. the prevent freezing of an industrial firewater system a safe rule to follow is
ensuring the top of the pipe is burried not less than below the lowest
frost line ANS >> 0.3m
3. on/off control the final control element is either positive or negitive-
ANS >> 100%, 100%
4. some characteristics of the series DC motor include ANS >> small current at no load
conditions danger of overspeed if the load is removed
the load current equals the exitation current
5. advantage of a panel mounted alarm annunciator over computer moniter
displays ANS >> operator can quickly recognize an alarm by its location on the panel without scrolling
6. is often the first indication of a fire so automatic dectectors should be
used ANS >> smoke
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, 7. controlling the identified indirect cause of workplace accidents or incidents
is normally long term development process involving measures or system
changes ANS >> preventitive
8. CSA-b51 a pressure vessel installed in a closed hot water system or cooling
system provided a pneumatic cushion or the expansion of water is called
ANS >> a cushion tank
9. iron or constantan ca be used in a thermocouple to measure a temp range
of ANS >> -210 to 1200
10. difference between the set point and the actual procces variable is known as
offset and is a charecteristic of controllers ANS >> Proportional only
11. if an generator looses exitation the rotor accelerates and it operates as an
induction generator running above speed ANS >> synchronous, synchronous
12. a double seated balance valve could be described as ANS >> passing up to twice as
much fluid as a single port valve, it generally divides the flow in half through to control ports
13. in a thermostatic trap the bellows are usually filled with ANS >> alcohol
14. symbol for flux density is and the symbol for mag flux is ANS >> B, o
with a line through it
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, 15. formulas under asme bpvc section 1 power boilers 27.2.2 the value t repre-
sents ANS >> minimum thickness of metal
16. a gate valve consists of a gate like actuated by a screwed stem and
handwheel which moves up and down the flow ANS >> disc, at right angles
to
17. The process of non-catalytic removal of NOx is the addition of to the
flue gas ANS >> Ammonia
18. an absolute pressure gauge uses a to sense the pressure ANS >>
bellows under a vaccuum
19. flange gaskets used for connecting two pipe lengths are usually made out
of material that is ANS >> soft
20. modern transformers are often better than efficient ANS >> 95%
21. asme bpvc recommended rules for care and operation of heating boilers AN
>> -
section VI
22. corrosive or toxic nature of sulfur compounds combine with oxygen to
make ANS >> SO2
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