Water tube boilers - Study guides, Class notes & Summaries
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3rd Class Stationary Steam Engineer License Exam 2024/2025
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______ draft is produced by a fan located between the boiler and the chimney - Answer induced 
_______ gauge glasses are used on boilers with precious exceeding 250 psi - Answer flat 
_______ is caused by allowing sudden extreme changes of temperature in a furnace - Answer spalling 
________ boilers can operate at higher pressures than fire tube boilers - Answer water tube 
_________ are necessary for complete combustion - Answer time, temperature, mixture, and atomization 
_________ is alw...
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NAPE Third Grade Engineering Review Test Questions with Verified Solutions
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NAPE Third Grade Engineering Review 
Test Questions with Verified Solutions 
 
How Can you lose your license? Drinking on the job, sleeping, negligence, unsafe work, 
failing to renew license, signing a falsified licensing application. 
 
What must you do if you change jobs? You must notify City Hall if you change jobs, change 
address or retire 
 
Why should you do rounds? To find and correct problems, prevent breakdowns, keeping 
permanent records will make it easier to forecast most breakdown...
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Power Engineering 4th Class - Unit A11 Questions and Answers 100% Pass
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Power Engineering 4th Class - Unit A11 
Questions and Answers 100% Pass 
 
(4-051-2.4) An early shell-type boiler had ___________ as its heating surface: 
Select one: 
a. Only the lower part of the shell 
b. The lower part of the shell and the rear plate or head 
c. The total shell side and one end plate or head 
d. Two passes along the shell or drum a 
 
(4-052-3.3) An advantage of a vertical tubeless firetube boiler is that it requires: 
Select one: 
 
a. Relatively small floor space 
b. No fu...
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Grade 3 Engineering Omaha exam prep by NAPE Questions and Answers Already Passed
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Grade 3 Engineering Omaha exam prep 
by NAPE Questions and Answers 
 
Already Passed 
 
#1 How can you loose your license? drinking on the job, sleeping on the job, negligence 
unsafe work, signing a falsified license application for someone, failing to renew your license 
annually 
 
#2 What must you do if you change jobs? Notify city hall if you change jobs, address or 
retire 
 
#3 Why should you do rounds? Find and correct problems to prevent breakdowns. Keeping 
permanent records will make ...
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Power Engineering Technology (Pet Yr. 1): 4a High Pressure Boilers Exam 100% Pass
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Power Engineering Technology (Pet Yr. 
1): 4a High Pressure Boilers Exam 100% 
 
Pass 
 
A characteristic that made early boilers very inefficient was: 
a. small heating surface 
b. an excess of flat surfaces 
c. the internal furnace 
 
d. lack of good quality fuels a 
 
A hot water boiler is considered a high temperature water boiler when: 
a. it's design pressure is less than 1100kPa 
b. it's operating temperature is greater than 120 degrees celsius 
c. it's operating temperature is less th...
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Stationary Engineer Exam Questions With Correct Answers Latest 2024-2025 (GRADED A+)
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Stationary Engineer Exam Questions With Correct Answers Latest (GRADED A+) On a gas fired boiler what is the proper gas to air mixture - Answer 30%-70% and 
in special arrangements it can be as high as 100% . ANSWER CHAPTER 11 
remember% 
What is the total hardness in a system that was found to have calcium hardness 
of 60ppm and magnesium hardness of 18ppm and carbon hardness of 12 ppm? - 
Answer TH=(Ca x 2.5) + (Mg x 4.1)nTH=(60 x 2.5) + (18 x 4.1)nTH= 150+73.8 =( 
223.8 PPM) 
How often s...
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3rd Class Stationary Steam Engineer License Prep - Complete Solutions (Answered)
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3rd Class Stationary Steam Engineer License Prep - Complete Solutions (Answered) __________ steam turbines allow condensate to be reclaimed for use in the system Condensing With water at a temperature of 212°f, 1 bhp is equivalent to the evaporation of 34.5 lb of water every ________ hour(s) 1 In a closed feedwater heater, the _________ Steam and water do not mix Sensible heat is heat that ______ changes the temperature of a substance but not its state When performing a hydrostatic test on a ...
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ABSA B1 Study Bank Questions Latest Update Graded A+
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Packaged watertube boilers capacities range from? 
a. 2300 kg to 65000 kg per hour 
b. 500 kg to 100 mg per hour 
c. 15 psi to 15000 kg per hour 
d. 65000 to 100000 kg per hour A 
The main advantage of the packaged boiler is its 
a. small size 
b. compact design 
c. low cost 
D. quality steam C 
Feild erected boilers have outputs of? 
A 75,000 kg/h 
B 100,000 kg/h 
C 100 mg/hD 150,000 kg/h or more D 
Where electric power is used as a heating source, the boiler rating shall be the maximum kilowat...
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Power Engineering Part A Unit 11 Rated A+
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Power Engineering Part A Unit 11 
 
Rated A+ 
 
Air Heater Transfer heat from the flue gas, or from steam, to the combustion air entering the 
boiler, to improve combustion efficiency 
 
Blowoff Valve Manually operated valve connected to a boiler for the intermittent discharge 
of boiler sediment, for lowering a boilers water level, or for draining a boiler 
 
Blowoff Vessel Vessel that intercepts, cools, and depressurizes boiler blowoff water, on 
order to protect municipal sewer systems 
 
Boi...
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Stationary Engineer local 99 || very Flawless.
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In a reciprocating feedwater pump, the _______________ 
 A. water piston is larger than the steam piston 
 B. water and steam piston are the same size 
 C. steam piston is larger than the water piston 
 D. steam valve has to be as large as the water valve correct answers C. steam piston is larger than the water piston 
 
An ignition arch is used with a(n) ________________ stoker 
 A. sidefeed 
 B. spreader 
 C. underfeed 
 D. chain grate correct answers D. Chain grate 
 
The try cocks on a water...
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