DC Boiler Exam Questions And Answers
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Area of a rectangle - - correct answer ✅Length x Width
Area of a Circle - - correct answer ✅.7854 x Diameter²
Volume of a Box - - correct answer ✅Length x Width x Height
Volume of a Cylinder - - correct answer ✅.7854 x Diameter² x
Length
Circumference of a Circle - - correct answer ✅π x Diameter
Unit of Force - - correct answer ✅Pound (lb)
Formula for Force - - correct answer ✅Pressure ÷ Area
Unit of Work - - correct answer ✅in-lb or ft-lb
Formula for Work - - correct answer ✅Force x Distance
Unit of Power - - correct answer ✅ft-lb/min
,DC Boiler Exam Questions And Answers
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Formula for Power - - correct answer ✅= Work ÷ Time
or (Force x Distance) ÷ Time
Formula for Mechanical Horsepower - - correct answer ✅= Power
÷ 33,000 ft-lb/min
Fahrenheit to Celsius - - correct answer ✅°C = (°F - 32) ÷ 1.8
Celsius to Fahrenheit - - correct answer ✅°F = (1.8 x °C) - 32
Fahrenheit to Rankine - - correct answer ✅°R = °F + 460
Celsius to Kelvin - - correct answer ✅K = °C +273.15
Charles' First Law - - correct answer ✅Volume1 / Pressure1 =
Volume2 / Pressure2
Charles' Second Law - - correct answer ✅Pressure1 /
Temperature1 = Pressure2 / Temperature2
,DC Boiler Exam Questions And Answers
100% Verified A++
Boyle's Law - - correct answer ✅Pressure1 x Volume1 = Pressure2
x Volume2
General Gas Law - - correct answer ✅(Pres1 x Vol1)/ Temp1 =
(Pres2 x Vol2)/Temp2
Formula for Levers - - correct answer ✅Resistance x DistanceR =
Effort x DistanceE
Formula for Inclined Planes - - correct answer ✅Force x Length =
Resistance x Height
Formula for Wheel & Axel - - correct answer ✅Force x DistanceF =
Resistance x DistanceR
Torque - - correct answer ✅Force x Radius
Safe Working Pressure of a Riveted Boiler (SWP) - - correct answer
✅(Area of Staybolt x Stress Constant of Staybolt) ÷ Area Covered
by Staybolt or = (a x C) ÷ A
Area Covered by Staybolt - - correct answer ✅= Pitch x Pitch
, DC Boiler Exam Questions And Answers
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Longitudinal Stress - - correct answer ✅(P x D x L) / 2t
P = Pressure
D = Diameter
L = Length
t = thickness of steel
Boiler Heating Surface (tubes) = - - correct 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 - - correct answer ✅746 Watts
Horsepower formula - - correct answer ✅= ft-lb/min ÷ 33000 ft-
lb/min
ft-lb formula for a pump - - correct answer ✅= gpm x 8.33 x head
(ft)
100% Verified A++
Area of a rectangle - - correct answer ✅Length x Width
Area of a Circle - - correct answer ✅.7854 x Diameter²
Volume of a Box - - correct answer ✅Length x Width x Height
Volume of a Cylinder - - correct answer ✅.7854 x Diameter² x
Length
Circumference of a Circle - - correct answer ✅π x Diameter
Unit of Force - - correct answer ✅Pound (lb)
Formula for Force - - correct answer ✅Pressure ÷ Area
Unit of Work - - correct answer ✅in-lb or ft-lb
Formula for Work - - correct answer ✅Force x Distance
Unit of Power - - correct answer ✅ft-lb/min
,DC Boiler Exam Questions And Answers
100% Verified A++
Formula for Power - - correct answer ✅= Work ÷ Time
or (Force x Distance) ÷ Time
Formula for Mechanical Horsepower - - correct answer ✅= Power
÷ 33,000 ft-lb/min
Fahrenheit to Celsius - - correct answer ✅°C = (°F - 32) ÷ 1.8
Celsius to Fahrenheit - - correct answer ✅°F = (1.8 x °C) - 32
Fahrenheit to Rankine - - correct answer ✅°R = °F + 460
Celsius to Kelvin - - correct answer ✅K = °C +273.15
Charles' First Law - - correct answer ✅Volume1 / Pressure1 =
Volume2 / Pressure2
Charles' Second Law - - correct answer ✅Pressure1 /
Temperature1 = Pressure2 / Temperature2
,DC Boiler Exam Questions And Answers
100% Verified A++
Boyle's Law - - correct answer ✅Pressure1 x Volume1 = Pressure2
x Volume2
General Gas Law - - correct answer ✅(Pres1 x Vol1)/ Temp1 =
(Pres2 x Vol2)/Temp2
Formula for Levers - - correct answer ✅Resistance x DistanceR =
Effort x DistanceE
Formula for Inclined Planes - - correct answer ✅Force x Length =
Resistance x Height
Formula for Wheel & Axel - - correct answer ✅Force x DistanceF =
Resistance x DistanceR
Torque - - correct answer ✅Force x Radius
Safe Working Pressure of a Riveted Boiler (SWP) - - correct answer
✅(Area of Staybolt x Stress Constant of Staybolt) ÷ Area Covered
by Staybolt or = (a x C) ÷ A
Area Covered by Staybolt - - correct answer ✅= Pitch x Pitch
, DC Boiler Exam Questions And Answers
100% Verified A++
Longitudinal Stress - - correct answer ✅(P x D x L) / 2t
P = Pressure
D = Diameter
L = Length
t = thickness of steel
Boiler Heating Surface (tubes) = - - correct 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 - - correct answer ✅746 Watts
Horsepower formula - - correct answer ✅= ft-lb/min ÷ 33000 ft-
lb/min
ft-lb formula for a pump - - correct answer ✅= gpm x 8.33 x head
(ft)
