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STATIONARY ENGINEER TEST EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY WELL DEFINED
ANSWERS LATEST 2024 – 2025 ALREADY GRADED A+
When designing a boiler, special consideration must be given to heat transmission
- (answers)Radiation, conduction, and convection
Which type of heat transfer takes place by actual physical contact, from molecule
to molecule, without displacing the molecules? - (answers)Conduction
Which type of boiler is the most economical to build? - (answers)Firetube
A boiler is an industrial boiler when - (answers)The steam generated is used for a
process
Which is true about an industrial boiler as compared to a utility boiler? -
(answers)Idustrial boilers operate at lower pressures and temperatures
Utility boilers are used primarily to produce - (answers)High pressure steam to
drive turbines that make electricity
Which of the following is NOT a type of fire tube boiler? - (answers)Stirling
Which of the following is an example of a cogeneration system? -
(answers)Exhaust gases from a combustion turbine driven generator are used to
make steam in a boiler for a secondary purpose
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If the tubes in a boiler are expanded during installation, which of the following
will
be true? - (answers)The ID is increased
When a new tube is installed in a firetube boiler, which of the following happens
to
the tube? - (answers)The tube is lengthened
What is the MINIMUM size of an elliptical manhole on a boiler? - (answers)11" x
15"
What is the MINIMUM water temperature to be used for a hydrostatic test? -
(answers)70 degrees F
How many sq ft of heating surface are required to produce 1 horsepower in a HRT
firetube boiler? - (answers)12 sq ft
How many sq ft of heating surface are required to produce 1 horsepower in a
vertical firetube boiler? - (answers)14 sq ft
How many sq ft of heating surface are required to produce 1 horsepower in a
watertube boiler? - (answers)10 sq ft
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If a high pressure boiler is at its highest operating pressure below the MAWP,
where will the pointer on the pressure gauge be? - (answers)at 12ʻ o clock
A gauge that reads higher than the actual boiler pressure is called a -
(answers)Fast gauge
Which is true about a boiler pressure mercury switch? - (answers)Mercury switch
must be installed with pigtail siphon vertically
On a low pressure boiler, cut out equals - (answers)cut in plus differential
What is the MAXIMUM blowback on a safety relief valve that is set for 100 psig -
(answers)4 psig
If a high pressure boiler operates at 100 psig, what should be the blowback of the
safety valve? - (answers)not more than 4% and not less then 2psi in any case
What is the MINIMUM blowback on a safety valve that pops at 250 psi. -
(answers)5 psi
A data plate on a safety valve on a low pressure boiler is marked "6900 Ib".
This refers to: - (answers)lb/hr capacity of the safety valve
STATIONARY ENGINEER TEST EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY WELL DEFINED
ANSWERS LATEST 2024 – 2025 ALREADY GRADED A+
When designing a boiler, special consideration must be given to heat transmission
- (answers)Radiation, conduction, and convection
Which type of heat transfer takes place by actual physical contact, from molecule
to molecule, without displacing the molecules? - (answers)Conduction
Which type of boiler is the most economical to build? - (answers)Firetube
A boiler is an industrial boiler when - (answers)The steam generated is used for a
process
Which is true about an industrial boiler as compared to a utility boiler? -
(answers)Idustrial boilers operate at lower pressures and temperatures
Utility boilers are used primarily to produce - (answers)High pressure steam to
drive turbines that make electricity
Which of the following is NOT a type of fire tube boiler? - (answers)Stirling
Which of the following is an example of a cogeneration system? -
(answers)Exhaust gases from a combustion turbine driven generator are used to
make steam in a boiler for a secondary purpose
,2|Page
If the tubes in a boiler are expanded during installation, which of the following
will
be true? - (answers)The ID is increased
When a new tube is installed in a firetube boiler, which of the following happens
to
the tube? - (answers)The tube is lengthened
What is the MINIMUM size of an elliptical manhole on a boiler? - (answers)11" x
15"
What is the MINIMUM water temperature to be used for a hydrostatic test? -
(answers)70 degrees F
How many sq ft of heating surface are required to produce 1 horsepower in a HRT
firetube boiler? - (answers)12 sq ft
How many sq ft of heating surface are required to produce 1 horsepower in a
vertical firetube boiler? - (answers)14 sq ft
How many sq ft of heating surface are required to produce 1 horsepower in a
watertube boiler? - (answers)10 sq ft
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If a high pressure boiler is at its highest operating pressure below the MAWP,
where will the pointer on the pressure gauge be? - (answers)at 12ʻ o clock
A gauge that reads higher than the actual boiler pressure is called a -
(answers)Fast gauge
Which is true about a boiler pressure mercury switch? - (answers)Mercury switch
must be installed with pigtail siphon vertically
On a low pressure boiler, cut out equals - (answers)cut in plus differential
What is the MAXIMUM blowback on a safety relief valve that is set for 100 psig -
(answers)4 psig
If a high pressure boiler operates at 100 psig, what should be the blowback of the
safety valve? - (answers)not more than 4% and not less then 2psi in any case
What is the MINIMUM blowback on a safety valve that pops at 250 psi. -
(answers)5 psi
A data plate on a safety valve on a low pressure boiler is marked "6900 Ib".
This refers to: - (answers)lb/hr capacity of the safety valve
