Exam (elaborations)
Boiler Test 2 – Questions & Correct Answers
- Course
- Institution
Boiler Test 2 – Questions & Correct Answers
[Show more]
Seller
Follow
LeCrae
Reviews received
Content preview
Boiler Test 2 – Questions & Correct AnswersSteam that has lost its heat and has turned back into water is ___. ✔️Ans -
condensate
Water from an open deaerating feedwater heater flows ✔️Ans - To the
feedwater pump
Steam that has lost its heat and has turned back into water is ___. ✔️Ans -
Condensate
Water from an open deaerating feedwater heater flows ✔️Ans - To the
feedwater pump
Safe and efficient boiler plant should include ______ pump(s). ✔️Ans - One
steam and one electric feedwater
When steam is superheated it has ✔️Ans - more heat energy, thus
producing more work
Steam is extracted from the turbine after it has passed through some of the
turbine stages to ✔️Ans - Be used for process work and heating
A surface condenser has water ✔️Ans - passed through tubes to cause
steam to condense, causing a vacuum
The vacuum on the exhaust side of the turbine ✔️Ans - Reduces back
pressure and water flow rate
A boiler generating 20,000 lb of steam/hr must be supplied with at least
✔️Ans - 20,000 lbs of water per hour
Oxygen and other noncondensable gases are separated from the feedwater
✔️Ans - In the open feedwater heater
The open feedwater heater is located ___. ✔️Ans - above the feedwater
pump
, On the feedwater line near the boiler is a check valve and a stop valve. The
valve closest to the shell of the boiler is the ___ valve ✔️Ans - Stop
On a boiler burning low pressure gas, the volume (amount) of gas burned is
controlled by the ___. ✔️Ans - volume of air passing through the venturi
tube
The blower on a low pressure gas system will not start until the ✔️Ans -
Vapor stat senses gas up to the pressure reducing governor
On the fuel oil system, the purpose of the duplex strainers on the suction line
between the tank and fuel oil pump is to ___. ✔️Ans - Allow one strainer to
be cleaned without securing the boiler
Coal stokers were developed because ✔️Ans - hand firing was inefficient in
larger-sized boilers
Pulverized coal has the consistency of talcum powder so that it ✔️Ans - can
come in closer contact with the oxygen for complete combustion
Draft is a difference in pressure that causes _______ ✔️Ans - air or gasses to
flow
Natural draft is produced by ✔️Ans - difference in temperature of a column
of gas inside the chimney from a column of air outside the chimney
Air is mixed inside of the burner register in a ____ gas system ✔️Ans - high
pressure
A draft fan located between the boiler and chimney is used in _____ draft
system ✔️Ans - induced
Pulverized coal is burned in ______ in the furnace ✔️Ans - suspension
Gas leaks must be located and repaired by a ✔️Ans - Gas company
representative
Water weighs approximately ___ lb/gal. ✔️Ans - 8.3
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 or Stuvia-credit 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 LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78252 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
Recently viewed by you
