Red Seal Plumbing Practice Exam

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Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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In a flame rectification system, it is critical that areas of the electrodes exposed to the flame be at least what ratio to one, ground to flame rod area?

2 to 1
3 to 1
4 to 1
5 to 1

The correct answer is: 4 to 1

In a flame rectification system, the ratio of ground to flame rod area is critical because it ensures that a strong enough flame signal is detected by the electrodes. If the ratio is too high, there may not be enough surface area for the flame to produce a strong signal. On the other hand, if the ratio is too low, the electrodes may be overloaded and not accurately detect the flame signal. Therefore, it is important that there is a proper balance between the two areas. Options A, B, and D do not meet this ratio and could potentially lead to incorrect readings. As a result, option C, with a ratio of 4 to 1, is the closest and most suitable answer.