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The feed check valve is used in order to

A. Regulate flow of boiler water

B. Check level of water in boiler drum

C. Recirculate unwanted feed water

D. Allow high pressure feed water to flow to drum and not allow reverse flow to take place

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  1. The diameters of fire tubes and superheater tubes in locomotive boiler are
  2. When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor…
  3. Tertiary air is the air used to
  4. The function of an eccentric rod is
  5. The selection of type and size of a steam boiler depends upon
  6. In accelerated circulation type boiler
  7. Which of the following statement is correct?
  8. The discharge is __________ at critical pressure.
  9. The main object of a boiler trial is
  10. The length of Cornish boiler is of the order of
  11. The function of a crosshead is to guide motion of the _________ and to prevent it from bending.
  12. The high steam and low water safety valve is used to blow off steam when the
  13. The relative heat absorption for successively added equal areas of boiler convection heating surfaces
  14. The proximate analysis of fuel lists
  15. Which of the following substance will have same percentage in both proximate and ultimate analysis?
  16. The ratio of the useful heat drop to the isentropic heat drop is called
  17. For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has
  18. In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s…
  19. There is always some steam left in the clearance space from the previous stroke. This steam left in…
  20. Which of the following is a water tube boiler?
  21. The effect of friction in the nozzle __________ dryness fraction of steam.
  22. While steam expands in turbines, theoretically the entropy
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  25. The friction present between the steam and the nozzle surfaces reduces the heat drop by
  26. Which of the following is a water tube boiler?
  27. Equivalent evaporation of water is the evaporation for a feed water supply at 100°C
  28. In natural circulation type boiler,
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  30. The diagram efficiency is the ratio of