Question 417Steam Plants - Assistant Engineer
70% to passWhen operating with the auxiliary feed line, feed water flow is controlled _______________.
Aautomatically by the main feed water regulator
Bautomatically by the economizer bypass
Cmanually by adjustment of the auxiliary feed water regulator spring setting
Dmanually by throttling the auxiliary feed stop-check valve
AI Explanation
The correct answer is D) manually by throttling the auxiliary feed stop-check valve. When operating with the auxiliary feed line, the feed water flow is controlled manually by adjusting the auxiliary feed stop-check valve. This allows the operator to manually regulate the flow of feed water to the boiler, as the main feed water regulator and economizer bypass are not involved in the auxiliary feed system. The other options are incorrect because the main feed water regulator and economizer bypass are not part of the auxiliary feed system, and the auxiliary feed water regulator spring setting is not manually adjusted to control the feed water flow.
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