The principal function of a stop valve is to

A. Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required

B. Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler

C. Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit

D. Increase the temperature of saturated steam without raising its pressure

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

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  1. In a uniflow engine
  2. The missing quantity per stroke is equal to
  3. Which of the following statement is correct?
  4. Boiler parameters are expressed by
  5. Expansion ratio is the ratio of
  6. The relative heat absorption for successively added equal areas of boiler convection heating surfaces
  7. Willians line follows the law (where b = A constant representing the shape of the Willians line, a =…
  8. An ideal regenerative cycle is
  9. The expansion of steam in a nozzle follows
  10. The principal function of a stop valve is to
  11. The number of water level indicators in a boiler are generally _________ in number.
  12. The critical pressure ratio for initially superheated steam is __________ as compared to initially dry…
  13. The coal requirement per kW hour generation in the thermal power plant is of the order of
  14. Latent heat of dry steam at atmospheric pressure is equal to
  15. Which of the following statement is wrong?
  16. The draught in locomotive boilers is produced by a
  17. For combustion of a fuel, following is essential
  18. Steam turbines are used for
  19. The bituminous coal is no caking if its carbon content is
  20. Heating wet steam at constant temperature is heating it at constant
  21. Pulverised fuel is used for
  22. The diameter of flue tube in a Cornish boiler is _________ that of the shell.
  23. Which is not correct statement about pulverised fuel firing?
  24. Mechanical equivalent of heat for 1 kcal or Joule's equivalent is equal to
  25. The diameter of fire tube of Cornish boiler compared to its shell is
  26. When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a
  27. The effect of friction in the nozzle __________ dryness fraction of steam.
  28. An air preheater is installed
  29. In a throttling process
  30. For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine…