Power Engineering - 4B11 Practice
Exam Questions & Answers (Grade
A+)
_____ are often used to aid the return of condensate through the
return piping of large complexes.
a. Boiler feed pumps
b. Vacuum injectors
c. Vacuum pumps
d. Vacuum breakers -
correct answer ✅c. Vacuum pumps
In an internally fired, gas-fired infrared heater, the surface
temperature is about:
a. 760C
b. 400C
c. 900C
d. 980C -
correct answer ✅b. 400C
In extremely cold climates, it may be necessary to
_________________________ in an HVAC system.
,Power Engineering - 4B11 Practice
Exam Questions & Answers (Grade
A+)
a. Close the outdoor air dampers
b. Install two separate pre-heat coils
c. Heat the dampers
d. Spray warm glycol on the hot water coils -
correct answer ✅b. Install two separate pre-heat coils
One of the advantages of forced circulation heating systems, in
comparison to gravity heating systems, is:
a. Larger pipes can be used
b. Smaller diameter pipes can be used
c. Lower cost
d. Reduced energy consumption -
correct answer ✅b. Smaller diameter pipes can be used
One of the advantages of the radiant panel hot water heating
system over the conventional heating system is:
, Power Engineering - 4B11 Practice
Exam Questions & Answers (Grade
A+)
a. Radiant panel heating systems require less piping
b. Radiant panel heating systems provide less resistance to water
flow
c. Radiant panel systems are lower in cost
d. Radiant heat panels distribute heat more evenly throughout the
room -
correct answer ✅d. Radiant heat panels distribute heat more
evenly throughout the room
When starting up a steam heating boiler, it should be filled to:
a. The maximum level
b. Just above the LWCO cut in point
c. 1/2 of the gauge glass
d. The bottom of the gauge glass -
correct answer ✅b. Just above the LWCO cut in point
Infrared heaters send out _____ heat energy in the form of invisible
infrared waves that travel in straight lines through the air.
Exam Questions & Answers (Grade
A+)
_____ are often used to aid the return of condensate through the
return piping of large complexes.
a. Boiler feed pumps
b. Vacuum injectors
c. Vacuum pumps
d. Vacuum breakers -
correct answer ✅c. Vacuum pumps
In an internally fired, gas-fired infrared heater, the surface
temperature is about:
a. 760C
b. 400C
c. 900C
d. 980C -
correct answer ✅b. 400C
In extremely cold climates, it may be necessary to
_________________________ in an HVAC system.
,Power Engineering - 4B11 Practice
Exam Questions & Answers (Grade
A+)
a. Close the outdoor air dampers
b. Install two separate pre-heat coils
c. Heat the dampers
d. Spray warm glycol on the hot water coils -
correct answer ✅b. Install two separate pre-heat coils
One of the advantages of forced circulation heating systems, in
comparison to gravity heating systems, is:
a. Larger pipes can be used
b. Smaller diameter pipes can be used
c. Lower cost
d. Reduced energy consumption -
correct answer ✅b. Smaller diameter pipes can be used
One of the advantages of the radiant panel hot water heating
system over the conventional heating system is:
, Power Engineering - 4B11 Practice
Exam Questions & Answers (Grade
A+)
a. Radiant panel heating systems require less piping
b. Radiant panel heating systems provide less resistance to water
flow
c. Radiant panel systems are lower in cost
d. Radiant heat panels distribute heat more evenly throughout the
room -
correct answer ✅d. Radiant heat panels distribute heat more
evenly throughout the room
When starting up a steam heating boiler, it should be filled to:
a. The maximum level
b. Just above the LWCO cut in point
c. 1/2 of the gauge glass
d. The bottom of the gauge glass -
correct answer ✅b. Just above the LWCO cut in point
Infrared heaters send out _____ heat energy in the form of invisible
infrared waves that travel in straight lines through the air.
