Power Engineering 4a - Unit 11 -
Introduction to Boiler Designs Exam
Questions & Answers (Grade A+)
Air heaters are implemented in steam generating units in order to:
Select one:
a. Produce dryer steam
b. Prevent utility boilers from freezing during winter outages
c. Improve combustion efficiency
d. Keep the boiler house warm -
correct answer ✅C
Large steam generators:
Select one:
a. Are of the water tube type
b. Have poor water circulation
c. Are fired by pulverized coal only
d. Are bottom supported -
correct answer ✅A
The amount of current passed through the water of an electrode
boiler depends on the:
Select one:
,Power Engineering 4a - Unit 11 -
Introduction to Boiler Designs Exam
Questions & Answers (Grade A+)
a. Voltage setting of the pressure control
b. Control valve setting
c. Speed of the circulating pump
d. Depth of the electrodes in the water -
correct answer ✅D
Boiler stays:
Select one:
a. Are used to support flat surfaces in a boiler
b. Are mostly used in watertube boilers
c. Have to be replaced every two years
d. Secure a boiler to its foundation -
correct answer ✅A
One type of electrode boiler depends on the electrodes being
submerged in water in order to generate steam.What safety device
is not required on this type of electric boiler?
Select one:
a. Low water cut-off
,Power Engineering 4a - Unit 11 -
Introduction to Boiler Designs Exam
Questions & Answers (Grade A+)
b. Blow-off valve
c. Gauge glass
d. Safety valve -
correct answer ✅A
A pressure gauge on a section IV boiler:
Select one:
a. Graduated to between 1.5 and 2 times the PRV setting
b. graduated to no less than 30 psi (200 kPa), nor more than 60 psi
(414 kPa)
c. graduated to a maximum setting or double the MAWP
d. Graduated to a maximum setting of double the PRV setting -
correct answer ✅B
Power Engineers are required (usually) to operate:
Select one:
a. Section I boilers over 750 kW, and section IV boilers over 1000
kW
b. Section I boilers of all sizes, and section IV steam boilers over 20
kW, and no section IV hot water boilers
, Power Engineering 4a - Unit 11 -
Introduction to Boiler Designs Exam
Questions & Answers (Grade A+)
c. Section I boilers of all sizes, and all steam section IV boilers, but
not section IV hot water boilers
d. Section I boilers over 20 kW, and section IV boilers over 750 kW -
correct answer ✅D
The steam space of a boiler must be large enough to:
Select one:
a. Accommodate all the steam riser tubes
b. allow the steam to rise from the surface of the water
c. Reduce the cooling effect of water
d. Keep the steam pressure down -
correct answer ✅B
Tubes for high pressure service are usually:
Select one:
a. Resistance welded construction
b. Seamless construction
c. Lap welded construction
Introduction to Boiler Designs Exam
Questions & Answers (Grade A+)
Air heaters are implemented in steam generating units in order to:
Select one:
a. Produce dryer steam
b. Prevent utility boilers from freezing during winter outages
c. Improve combustion efficiency
d. Keep the boiler house warm -
correct answer ✅C
Large steam generators:
Select one:
a. Are of the water tube type
b. Have poor water circulation
c. Are fired by pulverized coal only
d. Are bottom supported -
correct answer ✅A
The amount of current passed through the water of an electrode
boiler depends on the:
Select one:
,Power Engineering 4a - Unit 11 -
Introduction to Boiler Designs Exam
Questions & Answers (Grade A+)
a. Voltage setting of the pressure control
b. Control valve setting
c. Speed of the circulating pump
d. Depth of the electrodes in the water -
correct answer ✅D
Boiler stays:
Select one:
a. Are used to support flat surfaces in a boiler
b. Are mostly used in watertube boilers
c. Have to be replaced every two years
d. Secure a boiler to its foundation -
correct answer ✅A
One type of electrode boiler depends on the electrodes being
submerged in water in order to generate steam.What safety device
is not required on this type of electric boiler?
Select one:
a. Low water cut-off
,Power Engineering 4a - Unit 11 -
Introduction to Boiler Designs Exam
Questions & Answers (Grade A+)
b. Blow-off valve
c. Gauge glass
d. Safety valve -
correct answer ✅A
A pressure gauge on a section IV boiler:
Select one:
a. Graduated to between 1.5 and 2 times the PRV setting
b. graduated to no less than 30 psi (200 kPa), nor more than 60 psi
(414 kPa)
c. graduated to a maximum setting or double the MAWP
d. Graduated to a maximum setting of double the PRV setting -
correct answer ✅B
Power Engineers are required (usually) to operate:
Select one:
a. Section I boilers over 750 kW, and section IV boilers over 1000
kW
b. Section I boilers of all sizes, and section IV steam boilers over 20
kW, and no section IV hot water boilers
, Power Engineering 4a - Unit 11 -
Introduction to Boiler Designs Exam
Questions & Answers (Grade A+)
c. Section I boilers of all sizes, and all steam section IV boilers, but
not section IV hot water boilers
d. Section I boilers over 20 kW, and section IV boilers over 750 kW -
correct answer ✅D
The steam space of a boiler must be large enough to:
Select one:
a. Accommodate all the steam riser tubes
b. allow the steam to rise from the surface of the water
c. Reduce the cooling effect of water
d. Keep the steam pressure down -
correct answer ✅B
Tubes for high pressure service are usually:
Select one:
a. Resistance welded construction
b. Seamless construction
c. Lap welded construction
