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)
All Boilers should be viewed as - -Dangerous regardless of size and pressure
-One cubic inch of hot water under pressure expands to - -almost one cubic
foot of steam at atmospheric pressure
-Primary air is usually... - -Blown into the combustion chamber, along with
the fuel on a gas or oil burner.
-Heat always flows from ____ to ____ - -hot to cold
-An accumulation test is used to determine - -the relieving capacity of a
safety valve
-Staging is a method used to - -increase the pressure of a gas or liquid in
step rather than all at once.
-All vacuum return heating systems require - -traps
-Boiler water can be conditioned by - -heating addition of chemicals and by
blow down
-Water which contains scale-forming impurities is termed - -hard water
-33,478 BTUs equal - -One boiler horsepower
-One purpose of automatic control is to insure - -the safe operation of a
system
-Is it possible to find all three types of heat transfer working at the same
time? - -Yes
-A vapor can best be defined as a - -physical state between a liquid and a
gas
-a firetube contains - -the products of combustion
-a pigtail is used on a steam gauge connection to - -prevent damage to the
gauge
, -a convection type superheater - -absorbs its heat from the hot gases of
combustion
-All residential air conditioners use - -Freon
-A hydrostatic test is a test for - -the tightness of boiler drums and tubes
-One of the most important aspects of a boiler plant is the - -Boiler supply
-One BTU will raise the temperature of one pound of water by - -one degree
fahrenheit
-Steam and water can be found - -at the same temperature in a boiler
-Superheated steam is always - -Dry
-at sea level, water boils at - -212 Degrees F
-Larger pipe sizes are found on - -One pipe systems
-the explosion hazard in a oil-fired boiler is usually greatest when - -Lighting
off
-A good over the fire draft in a natural draft furnace should be
approximately - -.05 inches of water negative pressure
-A compound gage is calibrated to read - -Vacuum and pressure
-An ammeter is always connected to an electric circuit in - -Series with a
shunt
-A two-stage air compressor contains - -2 Cylinders
-The heating surface of a tube in an HRT boiler is located - -On the Outside
-The type of brace most commonly used in an HRT Boiler above the tubes is
a - -Diagonal stay
-Incomplete combustion in a boiler furnace is most often caused by - -
Insufficient amount of air
-The tensile strength of a boilerplate is - -55,000
-Special types of fittings are used to take up the expansion in steam lines.
One of these fitting is - -Expansion joints
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