DC BOILER FINAL PAPER 2026 COMPLETE QUESTIONS AND CORRECT ANSWERS

DC BOILER FINAL PAPER 2026 COMPLETE
QUESTIONS AND CORRECT ANSWERS

◉ Atmospheric pressure in psi.
Answer: 14.7 psi


◉ Atmospheric pressure in in.Hg..
Answer: 29.29 in.HG


◉ Lbs of air required to burn 1 lb of fuel.
Answer: 15 lbs


◉ % of oxygen in air.
Answer: 21%


◉ Lbs of air required to burn 1 lb of carbon.
Answer: 11.53 lbs


◉ Percentage of condensate return (Rc).
Answer: = [Mc-Fc)/(Mc - CC)] x 100
Mc = Make-up conductivity

,Fc = Feedwater conductivity
Cc = Condensate conductivity


◉ Conversion factor for grains per gallon to parts per million.
Answer: 17.1


◉ Weight of column of mercury in psi =.
Answer: = 13.57 x .433 x Height


◉ Formula for the horsepower requirement for a pump =.
Answer: (Q x 8.33 x H x sp.gr. ) / 33,000 x n
Q = flow rate in gpm
H = total head
sp.gr. = specific gravity of fluid being pumped
n = Pump efficiency


◉ 1 lb of chemical to 1000 gallons of water = x ppm.
Answer: 120 ppm


◉ Target pH for boiler water.
Answer: 10.5 - 11.0

, ◉ Target pH for condensate =.
Answer: 8.3


◉ Target for Total Dissolved Solids (TDS) in steam boiler water.
Answer: 2000 - 2500 micromhos


◉ Target for Total Dissolved Solids (TDS) in a hot water boiler.
Answer: 3500 micromhos


◉ Water Horsepower =.
Answer: = (Q x H) / 3960
Q = flow rate in gpm
H = Head


◉ Flow rate of a pump (Q) =.
Answer: = (3960 x WHP) / H
Q = flow rate
WHP = water horsepower
H = Head


◉ Solve for total head for a pump =.
Answer: = (3960 x WHP) / Q