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Hygrometry deals with the

A. Hygroscopic substances

B. Water vapour in air

C. Temperature of air

D. Pressure of air

Correct Answer : B.


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  1. A device used to increase the temperature of saturated steam without raising its pressure, is called
  2. The purpose of governing in steam turbines is to
  3. 100% efficiency of a thermal cycle cannot be achieved because of
  4. The draught produced by a steam jet issuing from a nozzle placed in the chimney is called
  5. Which is not correct statement about pulverised fuel firing?
  6. Which of the following statement is correct?
  7. Orsat meter is used for
  8. In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy…
  9. The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂…
  10. The process of maintaining the speed of the turbine constant for various load conditions, is known as
  11. Hard coke is used in
  12. The rate of discharge through the nozzle __________ when the exit pressure is gradually reduced.
  13. The critical pressure ratio for gases is
  14. An economiser is generally placed between
  15. The compounding of turbines is done in order to
  16. The fittings mounted on the boiler for its proper and safe functioning is a
  17. Parson's reaction turbine is a __________ reaction turbine.
  18. The diameter of Cornish boiler varies from
  19. Which is not the correct statement about moisture in coal?
  20. The pressure of reheat steam after passing through reheater compared to inlet condition is
  21. In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s…
  22. The water tubes in a Babcock and Wilcox boiler are
  23. Which of the following statement is wrong?
  24. The overall efficiency of thermal power plant is
  25. Which of the following boiler works on a forced circulation of water?
  26. Carbonisation of coal is the process of
  27. The ratio of heat equivalent to brake power to the energy supplied in steam is known as
  28. When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a
  29. The action of steam in a steam turbine is
  30. Reheating of steam under ideal conditions takes place at constant