Ignition failure in an automatically...

Question 1 / 270705eccefa3bacbc34ba4d47c77

Question 1 of 270705eccefa3bacbc34ba4d47c77

Ignition failure in an automatically controlled auxiliary boiler can be caused by __________.

Question 1 of 27070

Ignition failure in an automatically controlled auxiliary boiler can be caused by __________.

🔍 Key Concepts

• automatic ignition systems on auxiliary boilers • how electrodes and spark formation relate to ignition • which listed conditions directly affect the spark or flame starting, not later combustion issues

💭 Think About

• Ask which option would most directly interfere with the spark or lighting of the fuel-air mixture in an automatic boiler start sequence. • Consider which conditions are more likely to affect combustion efficiency after ignition rather than prevent ignition from starting at all. • Think about the physical role of an electrode in an ignition system and what might keep it from discharging properly.

✅ Before You Answer

• Identify which choice deals specifically with the ignition components (not fuel system pressure or brickwork). • Check which option would prevent a reliable spark from jumping the gap where ignition must begin. • Eliminate options that mainly affect heat transfer or boiler structure rather than the actual lighting of the burner.

Question 1 of 27070

Ignition failure in an automatically controlled auxiliary boiler can be caused by __________.

carbon deposits on the electrode

excessive fuel oil temperature

excessive return oil pressure

brickwork failure