A pulsating flame, accompanied by a burner...

Question 1 / 205eccefa3bacbc34ba4d47c13

Question 1 of 205eccefa3bacbc34ba4d47c13

A pulsating flame, accompanied by a burner developing black smoke in an auxiliary boiler, is an indication that the __________.

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Question 1 of 20

5eccefa3bacbc34ba4d47c13

A pulsating flame, accompanied by a burner developing black smoke in an auxiliary boiler, is an indication that the __________.

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🔍 Key Concepts

• Combustion air and fuel mixture in oil-fired auxiliary boilers • Effects of fuel oil pressure on flame shape, color, and stability • How incomplete combustion leads to black smoke and unstable (pulsating) flame

💭 Think About

• Which condition would most likely cause poor atomization of fuel, leading to big droplets that don’t burn cleanly? • If ignition current or electrode setting were wrong, what would you expect to see during start-up versus during steady burning? • What boiler problem typically produces both a ‘breathing’ or hunting flame AND black smoke at the same time?

✅ Before You Answer

• Compare which options would cause incomplete combustion and black smoke rather than no flame at all • Think about how fuel atomization quality changes with pressure at the burner nozzle • Decide which choice would cause an unstable, surging flame rather than a clean, steady one

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Question 1 of 20

A pulsating flame, accompanied by a burner developing black smoke in an auxiliary boiler, is an indication that the __________.

electrode setting is incorrect

ignition current is too low

fuel oil pressure is too low

fuel nozzle is correctly positioned

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Question 1 / 205eccefa3bacbc34ba4d47c13

Question 1 of 205eccefa3bacbc34ba4d47c13

A pulsating flame, accompanied by a burner developing black smoke in an auxiliary boiler, is an indication that the __________.

Back

Question 1 of 20

5eccefa3bacbc34ba4d47c13

A pulsating flame, accompanied by a burner developing black smoke in an auxiliary boiler, is an indication that the __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed