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Fusible plug for boilers is made of fusible metal containing tin, lead, and

A. Bismuth

B. Copper

C. Aluminium

D. Nickel

Correct Answer : A.


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  1. The variation of steam pressure in the nozzle depends upon
  2. The change in internal energy in steam engines equals to
  3. Thermal efficiency of well maintained boiler will be of the order
  4. Which of the following is required for a steam condensing plant?
  5. The effect of friction in the nozzle __________ dryness fraction of steam.
  6. The crown of the fire box is made hemispherical in order to
  7. The turbine blades are
  8. In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke…
  9. With increase in load, convection superheater has
  10. The expansion of steam, as it flows over the blades in reaction turbine, represents
  11. De-Laval turbine is a
  12. The number of flue tubes in Lancashire boiler is
  13. A condenser where circulating water flows through tubes which are surrounded by steam, in known as
  14. An air preheater
  15. Steam exhaust from high pressure turbine is reheated in
  16. The device attached to the steam chest for preventing explosions due to excessive internal pressure…
  17. Mechanical equivalent of heat for 1 kcal or Joule's equivalent is equal to
  18. The water tubes in a Babcock and Wilcox boiler are
  19. The critical pressure ratio for gases is
  20. The critical pressure ratio for initially superheated steam is __________ as compared to initially dry…
  21. The forced circulation of water does not take place in
  22. The chimney draught varies with
  23. Which of the following is a fire tube boiler?
  24. Water tube boilers are those in which
  25. Willian's law states that the steam consumption per hour provided with a throttled governor is proportional…
  26. The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes…
  27. On Mollier chart, flow through turbine is represented by
  28. The aim of a compound steam engine is
  29. The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having…
  30. In a receiver type compound engine, the high pressure and low pressure cylinders