Question 130Steam Plants - Assistant Engineer
70% to passThe number '29' on a fuel oil burner sprayer plate marked '2909' indicates the _______________.
Aorifice size
Bslot cross-sectional area
Cwhirling chamber size
Dcross-sectional area ratio
AI Explanation
The correct answer is A) orifice size. The number '29' on a fuel oil burner sprayer plate marked '2909' indicates the orifice size of the fuel oil burner. The orifice size is a critical parameter that determines the fuel flow rate and atomization characteristics of the burner, which are essential for efficient and clean combustion. The other options are incorrect because they do not directly relate to the information provided on the sprayer plate. The slot cross-sectional area, whirling chamber size, and cross-sectional area ratio are not typically indicated on a standard sprayer plate marking.
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