Chapter 90

Question 0

The ratio of heat released to heat transferred to boiler water is known as the:
A) combustion efficiency
B) heating surface efficiency
C) boiler efficiency
D) Enthalpy transfer ratio

Answer 0

C) boiler efficiency

Question 1

Sectional cast iron boiler sections are connected with:
A) push nipples
B) tie rods
C) victaulic couplings
D) unions

Answer 1

A) push nipples

Question 2

Modular cast iron boiler water flow is:
A) continuous through all chapters
B) connected in series
C) intermittent, occurring only while the unit is firing
D) done without the use of headers or manifolds

Answer 2

A) continuous through all chapters

Question 3

Which of the following is an advantage of cast iron sectional boilers?
A) high resistance to corrosion
B) ease of assembly
C) possibility of enlarging boiler capacity
D) all of the above

Answer 3

D) all of the above

Question 4

The burners in a cast iron boiler chapter are controlled by the:
A) temperature of the circulating water
B) step controller
C) ambient air temperature
D) boiler operator

Answer 4

B) step controller

Question 5

The sections in a cast iron boiler are sealed using:
A) flexible gaskets
B) high temperature putty
C) high temperature rope
D) highly machined metal surfaces

Answer 5

C) high temperature rope