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THE BOILERS AND PRESSURE VESSELS ORDINANCE, 2002 QUESTION #4071
Question 1
'Turndown Ratio' of a burner refers to the ratio of:
  • Max heat output to min heat output✔️
  • Height to width
  • Fuel to air
  • Day to night
Correct Answer Explanation
A burner with $10:1$ turndown can operate at $10\%$ of its full capacity without shutting off.