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DC Boiler Exam Prep (Formulas and constants used for the DC 3rd class boiler exam) QUESTIONS WITH COMPLETE SOLUTIONS

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DC Boiler Exam Prep (Formulas and constants used for the DC 3rd class boiler exam) QUESTIONS WITH COMPLETE SOLUTIONS What is the formula to find a volume of cylinder? - Answer V = Area of a circle (D² X 0.7854)X High or Length How many cubic inches are in a gallon? - Answer 231 cubic inches Formula to find volume of rectangle? - Answer V= Base x High x Length 187.01 gallons There is an example. How to calculate horsepower. A boiler has an output. The boiler horsepower of a boiler is generating 18,000 lbs of steam per hour at 140 psi is? - Answer 563.48 What is the circumference of a circle with a 10" diameter? - Answer 31.4 What is the circumference of a circle with a 26" diameter? - Answer 81.64 What is the area of a circle with a 10" diameter? - Answer 78.54 What is the area of a circle with a 35" diameter? - Answer 962.11 What is the area of a triangle with a base of 20" and a height of 18"? - Answer 180 in2 What is the area of a triangle with a base of 45" and a height of 26"? - Answer 585 in2 What is the volume of a cylindrical tank that has a 60" diameter and a 72" length? - Answer 203,575.68 in3 What is the volume of a cylindrical tank that has a 24" diameter and a 48" length? - Answer 21,714.74 in3 What is the total force acting on a 2" pressure relief valve with a popping pressure of 125 psi? - Answer 392.7 lbs What is the total force acting on a 4 1/2" pressure relief valve with a popping pressure of 500 psi? - Answer 7,952.17 lbs At what pressure will a 3" pressure relief valve lift with a 1500-pound spring? - Answer 212.20 psi

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  • what is the formula to find a volume of cylinder
  • how many cubic inches are in a gallon
  • formula to find volume of rectangle
  • there is an example how to calculate horsepower

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