2026 Questions and Correct Detailed Answers
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When taking a boiler out of service what should you not do - CORRECT
ANSWER-close the vent
what type of turbine oil purification system periodically removes a potion of the
oil and replaces it with fresh oil? - CORRECT ANSWER-makeup oil system
what type of steam turbine system has steam take-offs prior to going into the
condenser? - CORRECT ANSWER-extraction turbine
What is the pressure above which the exhaust side of a steam turbine and the
connected piping may be protected by either a safety valve or a rupture disc, or a
combination of the 2 - CORRECT ANSWER-15 psi
What grade fuel oil may be ignited by an electric spark from electrodes powered
by an ignition transformer? - CORRECT ANSWER-#2
what is the cheapest, easiest form of water treatment? - CORRECT ANSWER-
heating the water
,A turbine exhausts steam @ 15 psi. This steam is used in a low-pressure
application such as a deareator. this type of turbine is called a: - CORRECT
ANSWER-back-pressure turbine
At what temp should you add cooling water to a turbines bearings? - CORRECT
ANSWER-110-120 degrees
What is produced from the reaction between sodium sulfite and oxygen? -
CORRECT ANSWER-sodium sulfate
What is the purpose of an attemperator - CORRECT ANSWER-reduce temp of
superheated steam by adding a water mist
What are the 2 main methods by which steam is prevented from leaking out
around the turbine shaft where the shaft exits the casing? - CORRECT
ANSWER-labyrinth seals and carbon rings
If the water in a boiler is foaming, the water level indication in the gauge glass will
be: - CORRECT ANSWER-erratic
,Cast iron or ductile iron pipe is used for: - CORRECT ANSWER-underground
water supply and drainage
Combustion efficiency may be increased by_____ the primary air - CORRECT
ANSWER-Preheating
What is the purpose of cinder reinjection? - CORRECT ANSWER-increase
efficiency
2 forces of equal intensity acting in opposite directions is? - CORRECT
ANSWER-tension
What is true about the dew poimt of flue gasses - CORRECT ANSWER-dew
point is the temp at which the gasses will condense
What will not cause high stack temps? - CORRECT ANSWER-plugged dry pipe
What is true about smoke - CORRECT ANSWER-smoke consists of unburned
hydrocarbons
, WHat is used to reduce SO2 emissions in coal fired boilers? - CORRECT
ANSWER-Wet or dry scrubbers
In a solid fuel fired boiler, a gradual increase in flue gas exit temps over a course
of a shift inidicates the boiler operator needs to _______ - CORRECT ANSWER-
operate soot blowers
What watertube bolier is the largest in size and steam-generating compacitity -
CORRECT ANSWER-Utility watertube boiler
the blowdown on a safety valve can be altered by changing the setting of the
_____ - CORRECT ANSWER-huddling ring
Copper and brass piping may be used for piping systems as long as the temp does
not exceed - CORRECT ANSWER-406 degrees
What is not measured in a 3 element feedwater system
-feedwater flow
-drum pressure
-steam flow
-drum level - CORRECT ANSWER-drum pressure