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Forced draught fans of a large steam generator have
  • a)
    Backward curved blades
  • b)
    Forward curved blades
  • c)
    Straight or radial blades
  • d)
    Double curved blades
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Forced draught fans of a large steam generator havea)Backward curved b...


Backward curved blades

- Forced draught fans of a large steam generator typically have backward curved blades.
- These blades are designed to efficiently move large volumes of air at high pressures.
- The backward curved blades are ideal for applications where the fan needs to overcome high resistance or back pressure.
- These blades are curved in the direction opposite to the direction of rotation, which helps in reducing turbulence and noise.
- The design of these blades also allows for higher efficiency and lower power consumption compared to other blade types.
- In the case of large steam generators, where a significant amount of air needs to be circulated, the backward curved blades are preferred for their performance characteristics.

Overall, the use of backward curved blades in forced draught fans of large steam generators ensures efficient operation and optimal performance in moving air at high pressures.
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