BLUE SEAL STEAM QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
Question: If a cold water pump's discharge pressure gauge reads exactly 346 PSI,
what is the equivalent total developed head measured in feet?
Answer: ✔✔ 800 feet (Calculation: 346 PSI × 2.31 feet per PSI = 799.26,
rounded to 800 feet of head. Note: The original answer sheet contains a typo by
labeling the unit as "psi" instead of "feet").
Question: If a boiler plant burns heavy #6 fuel oil with a high sulfur content, what
damaging chemical impact occurs if the combustion or flue gas temperatures are
allowed to drop too low?
Answer: ✔✔ There will be a major increase in fireside corrosion (low
temperatures cause sulfur oxides to condense with moisture, forming highly
corrosive sulfuric acid).
Question: Why is it absolutely critical for electrical alternators (AC generators) to
maintain a strictly constant operating speed?
Answer: ✔✔ To maintain a stable, unvarying electrical frequency (such as 60 Hz)
across the power grid.
What does "h" represent -ANSWER......The sum of latent heat and sensible heat
When a small sample of a substance is put into a calorimeter and the heat of
combustion is determined, what is being measured -ANSWER......Higher Heating
Value (HHV)
What is the main function of a condenser on a steam turbine -
ANSWER......Reduces back pressure on the turbine
, Which of the following would be considered a true statement about rotary pumps -
ANSWER......They have low NPSH requirements
A common device found in the steam inlet of a condenser is -ANSWER......An
atmospheric relief valve
How much pressure in psi in one inch of mercury -ANSWER.......491
How much pressure in psi in 24 inches of mercury -ANSWER.......24 x .491 =
11.78 psi
Formula for calculating speed of a turbine -ANSWER......RPM = F x 120 / P
What is the ideal or theoretical cycle of a gas turbine -ANSWER......Brayton cycle
Potential energy of steam is transferred into what form of energy in a turbine -
ANSWER......Mechanical
A vacuum gauge reads 27.5 in, and the barometer reading is 30.5 in Hg. What is
the absolute pressure in pounds per square inch -ANSWER......1.5 psi
What is the psi of 24 inches Hg -ANSWER......11.78 psi
If your water flow transmitter indicates 60,000 # / hr, what is the flow rate in
gallons per minute -ANSWER......120 gpm
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
Question: If a cold water pump's discharge pressure gauge reads exactly 346 PSI,
what is the equivalent total developed head measured in feet?
Answer: ✔✔ 800 feet (Calculation: 346 PSI × 2.31 feet per PSI = 799.26,
rounded to 800 feet of head. Note: The original answer sheet contains a typo by
labeling the unit as "psi" instead of "feet").
Question: If a boiler plant burns heavy #6 fuel oil with a high sulfur content, what
damaging chemical impact occurs if the combustion or flue gas temperatures are
allowed to drop too low?
Answer: ✔✔ There will be a major increase in fireside corrosion (low
temperatures cause sulfur oxides to condense with moisture, forming highly
corrosive sulfuric acid).
Question: Why is it absolutely critical for electrical alternators (AC generators) to
maintain a strictly constant operating speed?
Answer: ✔✔ To maintain a stable, unvarying electrical frequency (such as 60 Hz)
across the power grid.
What does "h" represent -ANSWER......The sum of latent heat and sensible heat
When a small sample of a substance is put into a calorimeter and the heat of
combustion is determined, what is being measured -ANSWER......Higher Heating
Value (HHV)
What is the main function of a condenser on a steam turbine -
ANSWER......Reduces back pressure on the turbine
, Which of the following would be considered a true statement about rotary pumps -
ANSWER......They have low NPSH requirements
A common device found in the steam inlet of a condenser is -ANSWER......An
atmospheric relief valve
How much pressure in psi in one inch of mercury -ANSWER.......491
How much pressure in psi in 24 inches of mercury -ANSWER.......24 x .491 =
11.78 psi
Formula for calculating speed of a turbine -ANSWER......RPM = F x 120 / P
What is the ideal or theoretical cycle of a gas turbine -ANSWER......Brayton cycle
Potential energy of steam is transferred into what form of energy in a turbine -
ANSWER......Mechanical
A vacuum gauge reads 27.5 in, and the barometer reading is 30.5 in Hg. What is
the absolute pressure in pounds per square inch -ANSWER......1.5 psi
What is the psi of 24 inches Hg -ANSWER......11.78 psi
If your water flow transmitter indicates 60,000 # / hr, what is the flow rate in
gallons per minute -ANSWER......120 gpm
