Home

The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called

A. Natural draught

B. Induced draught

C. Forced draught

D. Balanced draught

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. For maximum discharge through a chimney, the condition is that height of hot gas column producing the…
  2. The diameter of internal flue tubes in a Lancashire boiler compared to its shell is
  3. O₂ content in atmospheric air on volume basis is
  4. The discharge is __________ at critical pressure.
  5. The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop
  6. The pressure of reheat steam after passing through reheater compared to inlet condition is
  7. On Millier chart, the constant pressure lines
  8. Fire tube boilers are limited to a maximum design working pressure of
  9. One kilowatt-hour energy is equivalent to
  10. In water tube boilers
  11. An ideal regenerative cycle is
  12. For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine…
  13. Superheating of steam is done at
  14. The fire tubes in, a Coarran and Scottish marine boiler are
  15. The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known…
  16. Cut-off ratio is the ratio of
  17. A nozzle is said to be a divergent nozzle
  18. The proximate analysis of fuel lists
  19. When the circulation of water, in a boiler, is by convection currents which are set up during the heating…
  20. The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes…
  21. The function of an eccentric rod is
  22. Which of the following statement is wrong?
  23. With increase in load, radiant superheater has
  24. In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the…
  25. Size of boiler tubes is specified by
  26. Which of the following boiler works on a forced circulation of water?
  27. Sulphur in coal results in
  28. The ratio of the volume at cut-off to the swept volume is called
  29. In recuperative air preheaters, the heat is transferred
  30. The friction in the nozzle __________ exit velocity of steam.