Function of fusible plug in a boiler is to

A. Drain out water and sludge from the boiler during repair

B. Put off fire in the furnace when water level in the boiler falls to unsafe limit

C. Guard the boiler in case of abnormal rise in steam pressure

D. All (A), (B) & (C)

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

You can do it
  1. Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air…
  2. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.
  3. The surface tension of a liquid, at critical temperature is
  4. The material used for coating the welding electrode is termed as the
  5. Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as
  6. Which of the following is the largest quantum of pressure?
  7. __________ furnace is generally used in the non-ferrous foundries.
  8. The property of material, by which a given amount of energy is absorbed by it without plastic deformation,…
  9. Force between the molecules of the same substance is called __________ force.
  10. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute…
  11. Silicon in steel
  12. Insulation of liquid surface can be achieved by __________ on top of its surface.
  13. The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the…
  14. Pick out the wrong statement.
  15. Matte smelting is used in the extraction of
  16. Tin based white metals are used, where bearings are subjected to
  17. Which of the following properties of a solid is not dependent on crystal imperfection?
  18. Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement.…
  19. In practice, the compression ratio of compression-ignition (CI) engine ranges from
  20. During sensible heating of humid air
  21. Maximum consumption of limestone is in the __________ industry.
  22. Pearlite comprises of
  23. Powder metallurgy technique is used in the production of __________ tools.
  24. Magnesium is present in
  25. Material of construction of foundry crucible is
  26. Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v2)] (V - b) = RT, depends…
  27. The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.
  28. What is the pH of distilled water?
  29. Dryness fraction of dry steam is
  30. Often earing defects are found during deep drawing operation, because the