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NEWEST 2024 DC BOILER EXAM PREP (FORMULAS AND CONSTANTS USED FOR THE DC 3RD CLASS BOILER EXAM) COMPLETE ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS (100% CORRECT VERIFIED ANSWERS) LATEST UPDATES |ALREADY GRADED A+ (FULL REVISED EXAM)$18.49
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NEWEST 2024 DC BOILER EXAM PREP (FORMULAS AND CONSTANTS USED FOR THE DC 3RD CLASS BOILER EXAM) COMPLETE ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS (100% CORRECT VERIFIED ANSWERS) LATEST UPDATES |ALREADY GRADED A+ (FULL REVISED EXAM)
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2024 DC BOILER PREP
Institution
2024 DC BOILER PREP
NEWEST 2024 DC BOILER EXAM PREP (FORMULAS AND CONSTANTS USED FOR THE DC 3RD CLASS BOILER EXAM) COMPLETE ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS (100% CORRECT VERIFIED ANSWERS) LATEST UPDATES |ALREADY GRADED A+ (FULL REVISED EXAM)
NEWEST 2024 DC BOILER EXAM PREP (FORMULAS AND
CONSTANTS USED FOR THE DC 3RD CLASS BOILER EXAM)
COMPLETE ACTUAL EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS (100% CORRECT VERIFIED ANSWERS)
LATEST UPDATES |ALREADY GRADED A+ (FULL REVISED
EXAM)
Safe Working Pressure of a Riveted Boiler (SWP) - Answer-(Area
of Staybolt x Stress Constant of Staybolt) ÷ Area Covered by
Staybolt or = (a x C) ÷ A
Area Covered by Staybolt - Answer-= Pitch x Pitch
Longitudinal Stress - Answer-(P x D x L) / 2t
P = Pressure
D = Diameter
L = Length
t = thickness of steel
Boiler Heating Surface (tubes) = - Answer-= C x L x #
C = Circumference of tubes
L = Length of tubes
# = Number of tubes
,HS = π x Diameter x Length x Number of Tubes
Watts per Boiler Horsepower - Answer-746 Watts
Horsepower formula - Answer-= ft-lb/min ÷ 33000 ft-lb/min
ft-lb formula for a pump - Answer-= gpm x 8.33 x head (ft)
Factor of Evaporation (FE) = - Answer-= [Hs - (tfw-32)] ÷ 970.3
Hs = Enthalpy of steam
tfw = temperature of feed water
Latent Heat of Vaporization for Water - Answer-970.3 Btu/lb
Latent Heat of Fusion for Water - Answer-144 Btu/lb
1 Boiler Horsepower = x lbs of steam generator per hour -
Answer-34.5 lbs/hr
1 Boiler Horsepower = x Btu/hr - Answer-33,475 Btu/hr
,1 BHP = x ft² of heating surface (general) - Answer-10 ft²
heating surface
Volume of water increases by x percent when it flashes to
steam - Answer-x 1600
Area of a rectangle - Answer-Length x Width
Area of a Circle - Answer-.7854 x Diameter²
Volume of a Box - Answer-Length x Width x Height
Volume of a Cylinder - Answer-.7854 x Diameter² x Length
Circumference of a Circle - Answer-π x Diameter
Unit of Force - Answer-Pound (lb)
Formula for Force - Answer-Pressure ÷ Area
Unit of Work - Answer-in-lb or ft-lb
, Formula for Work - Answer-Force x Distance
Unit of Power - Answer-ft-lb/min
Formula for Power - Answer-= Work ÷ Time
or (Force x Distance) ÷ Time
Formula for Mechanical Horsepower - Answer-= Power ÷
33,000 ft-lb/min
Celsius to Fahrenheit - Answer-°F = (1.8 x °C) - 32
Fahrenheit to Rankine - Answer-°R = °F + 460
Celsius to Kelvin - Answer-K = °C +273.15
Charles' First Law - Answer-Volume1 / Pressure1 = Volume2 /
Pressure2
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