The ratio of the actual vacuum to the ideal vacuum in a condenser is called

A. Condenser efficiency

B. Vacuum efficiency

C. Nozzle efficiency

D. Boiler efficiency

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  1. In a throttling process
  2. Incomplete combustion can be best judged by
  3. A safety valve usually employed with stationary boilers is
  4. An air preheater is installed
  5. The length of Cornish boiler is of the order of
  6. Boiler stays are used to
  7. The maximum discharge of steam through a convergent-divergent nozzle depends upon
  8. One kg of steam sample contains 0.8 kg dry steam; Its dryness fraction is
  9. The clearance in the engine cylinder
  10. The performance of a boiler is measured by the
  11. When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as
  12. In forced circulation type boiler
  13. The bituminous coal is no caking if its carbon content is
  14. The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where…
  15. The mechanical draught _________ with the amount of smoke.
  16. Spontaneous combustion is a phenomenon in which
  17. Which of the following are boiler accessories?
  18. Fire tube boilers are those in which
  19. O₂ content in atmospheric air on weight basis is
  20. Expansion ratio is the ratio of
  21. In order to reduce the rotor speed of an impulse turbine, the method employed is
  22. Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?
  23. Superheating of steam is done at
  24. The length of Cornish boiler varies from
  25. The safety valve on boiler drum compared to safety valve on superheater is set at
  26. The diameter of flue tube in a Cornish boiler is _________ that of the shell.
  27. In reaction turbines, the axial thrust is due to
  28. For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine…
  29. The water tubes in a Babcock and Wilcox boiler are
  30. In a receiver type compound engine, the high pressure and low pressure cylinders