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An economiser _________ the steam raising capacity of a boiler.

A. Increases

B. Decreases

C. Has no effect on

D. None of these

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

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  1. The value of diagram factor depends upon
  2. Over fire burning is the phenomenon of
  3. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls…
  4. In forced recirculation type boiler,
  5. The fire tubes in a Locomotive boiler has _________ diameter.
  6. The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the…
  7. The pressure at which latent heat of vaporisation of water is zero, is
  8. A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio…
  9. The safety valve at superheater as compared to drum safety valve setting is set at
  10. If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined…
  11. The three Ts for good combustion are
  12. The ratio of brake power to the indicated power is known as
  13. The object of producing draught in a boiler is
  14. Which of the following gases has the highest calorific value?
  15. The effect of super-saturation is that the
  16. Maximum energy loss in a boiler occurs due to
  17. Pick up the wrong statement about water tube boiler in comparison to fire tube boilers
  18. Expanding steam to a very low pressure (high vacuum) in steam engines is
  19. In a uniflow engine
  20. The actual power generated in the engine cylinder is called
  21. Caking coals are those which
  22. Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
  23. The draught produced by a steam jet issuing from a nozzle placed in the ash-pit under the fire grate…
  24. The ratio of heat equivalent to brake power to the energy supplied in steam is known as
  25. When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle…
  26. Which of the following statement is correct?
  27. In a Tandem type compound engine, the high pressure and low pressure cylinders
  28. The temperature of flue gases at air heater outlet should be
  29. The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency,…
  30. Which of the following compound steam engine requires a smaller flywheel?