General Studies · Steam Boilers
वायु पूर्व-तापक (air pre-heater) भट्टी में प्रवेश करने से पहले ___________ का तापमान बढ़ा देता है।
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1भरण-जल (feedwater)
- 2वायु✓
- 3फ्लू गैसें
- 4ईंधन
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वायु
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