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The numbers of fire tubes in a Cochran boiler are

A. 75

B. 115

C. 165

D. 225

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  1. The velocity of flue gases (V) through the chimney under a static draught of (H') metres is given by
  2. Which of the following statement is wrong?
  3. The diagram factor is the ratio of the
  4. Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
  5. Pick up the wrong statement about water tube boiler in comparison to fire tube boilers
  6. 100% efficiency of a thermal cycle cannot be achieved because of
  7. In forced circulation type boiler
  8. In recuperative air preheaters, the heat is transferred
  9. At very low temperature, the melting and boiling temperatures become equal. This temperature is
  10. Expansion ratio is the ratio of
  11. Heating wet steam at constant temperature is heating it at constant
  12. If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton's…
  13. In forced recirculation type boiler,
  14. A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine…
  15. The fire tubes in a Scotch marine boiler are
  16. Thermal efficiency of a thermal power plant is of the order of
  17. The steam leaves the nozzle at a
  18. The height of chimney in a power plant is governed by
  19. Incomplete combustion can be best judged by
  20. In a reaction turbine, when steam flows through the fixed blades,
  21. De-Laval turbines are mostly used
  22. In designing air preheaters, the important design consideration is that
  23. The impulse reaction turbine has its driving force
  24. Presence of moisture in fuel oil would
  25. In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle…
  26. A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg…
  27. In a uniflow engine
  28. Fire tube boilers are limited to a maximum design working pressure of
  29. The overall efficiency of thermal power plant is
  30. Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?