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In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will

A. Remain unaffected

B. Improve

C. Worsen

D. May improve/worsen depending on size

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  1. The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent…
  2. The safety valve on boiler drum compared to safety valve on superheater is set at
  3. Secondary air is the air used to
  4. Which of the following coals has the highest calorific value?
  5. The ratio of total useful heat drop to the total isentropic heat drop, is called
  6. On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented…
  7. The actual power supplied by the engine crankshaft is called
  8. The equivalent evaporation is defined as
  9. In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder…
  10. When the circulation of water, in a boiler, is by convection currents which are set up during the heating…
  11. The amount of water evaporated in kg per kg of fuel burnt is called
  12. Presence of moisture in fuel oil would
  13. On Mollier chart, flow through turbine is represented by
  14. The difference between Cornish boiler and Lancashire boiler is that
  15. In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy…
  16. Which of the following is a fire tube boiler?
  17. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls…
  18. Parson's turbine is a
  19. The draught may be produced by a
  20. In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace…
  21. The biggest size of thermal power unit operating in India is
  22. The increase in pressure
  23. A wet vapour can be completely specified by
  24. A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the…
  25. In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the…
  26. In locomotive boiler, maximum steam pressure is limited to
  27. In water tube boilers
  28. Multi-stage steam turbines are of the
  29. The clearance in the engine cylinder
  30. Besides mean effective pressure, the data required to determine the indicated power of an engine include