DC 3rd Class Boiler Exam Prep | Questions & Answers | Study Guide 2026/2027

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DC 3rd Class Boiler Exam Prep | Questions & Answers | Study Guide 2026/2027

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2026/2027

Institution DC Boiler

Course DC Boiler

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DC 3rd Class Boiler Exam Prep | Questions & Answers | Study Guide 2026/2027

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2026/2027DC Boiler Exam Prep DC 3rd class boiler exam (questions & answers).!!!!

Area of a rectangle Length x Width

Area of a Circle .7854 x Diameter²

Volume of a Box Length x Width x Height

Volume of a Cylinder .7854 x Diameter² x Length

Circumference of a Circle π x Diameter

Unit of Force Pound (lb)

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,2026/2027DC Boiler Exam Prep DC 3rd class boiler exam (questions & answers).!!!!

Formula for Force Pressure ÷ Area

Unit of Work in-lb or ft-lb

Formula for Work Force x Distance

Unit of Power ft-lb/min

Formula for Power = Work ÷ Time
or (Force x Distance) ÷ Time

Formula for Mechanical = Power ÷ 33,000 ft-lb/min
Horsepower

Page 2 of 33

,2026/2027DC Boiler Exam Prep DC 3rd class boiler exam (questions & answers).!!!!

Fahrenheit to Celsius °C = (°F - 32) ÷ 1.8

Celsius to Fahrenheit °F = (1.8 x °C) - 32

Fahrenheit to Rankine °R = °F + 460

Celsius to Kelvin K = °C +273.15

Charles' First Law Volume1 / Pressure1 = Volume2 / Pressure2

Charles' Second Law Pressure1 / Temperature1 = Pressure2 /
Temperature2

Boyle's Law Pressure1 x Volume1 = Pressure2 x Volume2

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, 2026/2027DC Boiler Exam Prep DC 3rd class boiler exam (questions & answers).!!!!

General Gas Law (Pres1 x Vol1)/ Temp1 = (Pres2 x Vol2)/Temp2

Formula for Levers Resistance x DistanceR = Effort x DistanceE

Formula for Inclined Planes Force x Length = Resistance x Height

Formula for Wheel & Axel Force x DistanceF = Resistance x DistanceR

Torque Force x Radius

Safe Working Pressure of a (Area of Staybolt x Stress Constant of Staybolt)
Riveted Boiler (SWP) ÷ Area Covered by Staybolt or = (a x C) ÷ A

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Uploaded on: September 14, 2026
Number of pages: 33
Written in: 2026/2027
Type: Exam (elaborations)
Contains: Questions & answers

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