Exam (elaborations)
1st Class Stationary Engineers Examination #2 (False questions omitted)
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1st Class Stationary Engineers Examination #2 (False questions omitted)
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1st Class Stationary EngineersExamination #2 (False questions omitted)
33,478 BTUs equal - ANS-One boiler horsepower
A boiler pressure gauge gives readings in - ANS-Gauge pressure
A compound gage is calibrated to read - ANS-Vacuum and pressure
a convection type superheater - ANS-absorbs its heat from the hot gases of combustion
A device used to steady the discharge of a pump. - ANS-Air chamber
A device, which utilizes centrifugal force to remove moisture from steam. - ANS-Dry
pipe
a firetube contains - ANS-the products of combustion
A good over the fire draft in a natural draft furnace should be approximately - ANS-.05
inches of water negative pressure
A hydrostatic test is a test for - ANS-the tightness of boiler drums and tubes
a pigtail is used on a steam gauge connection to - ANS-prevent damage to the gauge
A specially constructed valve used on many receivers in a ammonia compression
system - ANS-King Valve
A super heater - ANS-raises the temperature of steam
A temperature controlled device used in heating systems - ANS-thermostatic trap
A two-stage air compressor contains - ANS-2 Cylinders
A valve generally used as a pressure shut-off valve is a - ANS-Gate valve
A vapor can best be defined as a - ANS-physical state between a liquid and a gas
, Air contains what percent of oxygen - ANS-20%
All Boilers should be viewed as - ANS-Dangerous regardless of size and pressure
All residential air conditioners use - ANS-Freon
All vacuum return heating systems require - ANS-traps
An accumulation test is used to determine - ANS-the relieving capacity of a safety valve
An ammeter is always connected to an electric circuit in - ANS-Series with a shunt
An economizer uses waste heat to raise the temperature of - ANS-Feed water
An example of heat transfer by radiation is - ANS-Heat from the sun
at sea level, water boils at - ANS-212 Degrees F
Boiler water can be conditioned by - ANS-heating addition of chemicals and by blow
down
Coils located in the boiler breeching utilizing waste heat - ANS-Air preheater
Convert -40Degrees centigrade to fahrenheit - ANS-C = (F-32) / 1.8
-40 = (F - 32) / 1.8
-72 = F - 32
-40 = F
Convert 86 Fahrenheit to centigrade - ANS-C = (F-32) / 1.8
C = (86-32)/1.8
C = 30 Degrees C
Cools the refrigerant and changes it from a gas to a liquid in a ammonia compression
system - ANS-Condenser
Eliminates non-condensable gases from the ammonia compression system -
ANS-Purge Valve
Fan located ahead of the fuel burner - ANS-Forced draft fan
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