Exam (elaborations)
Boiler Exam Practice Tests
- Module
- 3rd Grade Engineer.
- Institution
- 3rd Grade Engineer.
Boiler Exam Practice Tests
[Show more]
Seller
Follow
Content preview
Boiler Exam Practice Tests1 - ANS-According to the ASME Code, the minimum size pipe connecting the water
column to the boiler is ___".
1 - ANS-When economizers are used to heat boiler feedwater, every 10°F rise in
feedwater temperature is accompanied by a ___% savings in fuel.
1 ½ - ANS-The pressure applied on the boiler during a hydrostatic test is ___ times the
MAWP.
1 ½ - ANS-The range of a boiler pressure gauge must not be less than ___ times the
safety valve setting.
1 ½ times the MAWP - ANS-When making a hydrostatic test on a boiler, the pressure is
___.
1 ½ to 2 times the safety valve setting - ANS-According to the ASME code, the
suggested range of a boiler pressure gauge is ___.
10 to 11.5 - ANS-The pH of the boiler water should be ___.
100 - ANS-If three boilers are connected to a common header and each boiler is at 100
psi, the master gauge on the header would read ___ psi.
100,000; therm - ANS-The Btu content of natural gas is ___ Btu per ___.
15 psi to 25 psi - ANS-When warming up a boiler during cold plant startup, the boiler
vent should remain open until the steam pressure reaches approximately ___.
174.7 - ANS-The absolute pressure of a steam boiler carrying 160 psig would be ___
psia.
2 ½ - ANS-According to the ASME Code, the maximum size of the boiler bottom
blowdown line is ___".
34.5 - ANS-At a water temperature of 212°F, 1 BHP is equivalent to the evaporation of
___ lb of water/hour.
,34.5 - ANS-Boiler horsepower is the evaporation of ___ lb of water/hr from and at a
feedwater temperature of 212°F.
500 - ANS-According to the ASME Code, a boiler that has more than ___ sq ft of
heating surface must have two or more safety valves.
6 - ANS-Boiler safety valve capacity must be such that the steam pressure can never go
higher than ___% above the MAWP.
6 - ANS-No. ___ fuel oil has the highest Btu content per gallon.
6% above the MAWP - ANS-With all of the safety valves popping, the boiler pressure
should not go higher than ___.
7 - ANS-Neutral on the pH scale is ___.
a blowdown tank - ANS-Sludge and sediment from the mud drum of a boiler are
discharged into ___.
a broken baffle - ANS-A sudden increase in chimney temperature without a
corresponding increase in steam demand indicates ___.
a dirty heating surface - ANS-A gradual increase in chimney temperature indicates ___.
a high - ANS-Viscosity is the internal resistance of a fluid to flow. No. 6 fuel oil has ___
viscosity.
a high furnace temperature - ANS-For the efficient combustion of pulverized coal, it is
necessary to maintain ___.
a lower pressure than - ANS-The superheater header safety valve is set to pop at ___
the steam and water drum safety valves.
a minimal amount of excess air - ANS-Complete combustion is defined as burning all
fuel using ___.
a mixture of water and steam - ANS-The middle try cock should be mounted at the
NOWL and, when operated, should blow ___.
a rise in chimney temperature - ANS-A broken baffle in a watertube boiler causes ___.
, above the feedwater pump on the suction side - ANS-An open feedwater heater is
located ___.
accumulation - ANS-A(n) ___ test is used to test the relieving capacity of a safety valve.
acts as a flame failure control - ANS-An infrared scanner ___.
alkaline - ANS-Boiler water with a pH of 11 is ___.
allow the setting to cool - ANS-Before draining a boiler, the operator should ___.
an air- or water-driven turbine - ANS-Scale buildup in the tubes of watertube boiler can
be removed by ___.
an internal furnace - ANS-A scotch marine boiler has ___.
Anthracite - ANS-___ coal has the highest amount of fixed carbon.
as a secondary means of determining the water level - ANS-The try cocks on a water
column are used ___.
at its lowest load - ANS-The best time to blow down a boiler is when it is ___.
at least once a shift - ANS-In most plants, the suggested operating procedure is to blow
down the water column and gauge glass ___.
at the NOWL - ANS-The feedwater regulator element is located ___.
at the NOWL - ANS-The surface blowdown on a steam boiler is located ___.
atmospheric - ANS-In a balanced draft system, the pressure in the furnace is
approximately ___.
atmospheric pressure - ANS-A barometer measures ___.
atomize the fuel oil completely - ANS-The function of the fuel oil burner is to ___.
below atmospheric - ANS-In a plant that uses forced draft, the pressure at the base of
the chimney is ___ pressure.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller modockochieng06. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.17. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
74735 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now