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Which type of boiler can meet rapid changes of load?

A. Vertical fire tube type

B. Horizontal fire tube type

C. Horizontal water tube type

D. Forced circulation type

Correct Answer : D.


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  1. Lancashire boiler has __________ internal flue tubes.
  2. Which of the following is a water tube boiler?
  3. The diagram efficiency is the ratio of
  4. Willians line follows the law (where b = A constant representing the shape of the Willians line, a =…
  5. The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle…
  6. The expansion of steam, as it flows over the blades in reaction turbine, represents
  7. The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity…
  8. The fire tubes in a Scotch marine boiler are
  9. The ratio of the workdone on the blades to the energy supplied to the blades, is called
  10. The effect of friction in the nozzle __________ dryness fraction of steam.
  11. Multi-stage steam turbines are of the
  12. The critical pressure ratio for initially wet steam is
  13. A nozzle is said to be a convergent nozzle
  14. A fusible plug is fitted in small boilers in order to
  15. Thermal equilibrium means that the flow of steam is
  16. Heating wet steam at constant temperature is heating it at constant
  17. The ratio of the energy required to produce the artificial draught (expressed in metres head or J/kg…
  18. In recuperative air preheaters, the heat is transferred
  19. In an impulse reaction turbine, the pressure drops gradually and continuously over
  20. A boiler in India should conform to safety regulations of
  21. In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from…
  22. Fire tube boilers are
  23. Vacuum for reciprocating steam engines compared to steam turbines is
  24. The process of maintaining the speed of the turbine constant for various load conditions, is known as
  25. The critical pressure ratio (p₂/p₁) is given by
  26. The function of an eccentric rod is
  27. The crown of the fire box is made hemispherical in order to
  28. A compound steam engine in which piston rods of high pressure and low pressure cylinders ' are attached…
  29. The balanced draft furnace is one using
  30. Efficiency of a thermal cycle increases by