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Boiler Test 2 – Questions & Correct Answers
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Boiler Test 2 – Questions & Correct Answers
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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
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