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Mechanical Engineering :: Steam Nozzles and Turbines

  1. Steam engine operates on

  2. A.

     Carnot cycle

    B.

     Joule cycle

    C.

     Stirling cycle

    D.

     Brayton cycle


  3. The actual power supplied by the engine crankshaft is called

  4. A.

     Indicated power

    B.

     Brake power

    C.

     Frictional power

    D.

     None of these


  5. The pressure of reheat steam after passing through reheater compared to inlet condition is

  6. A.

     More

    B.

     Less

    C.

     Equal

    D.

     May be more or less depending on capacity of reheater


  7. The forced circulation of water does not take place in

  8. A.

     LaMont boiler

    B.

     Lancashire boiler

    C.

     Velox boiler

    D.

     Benson boiler


  9. The height of chimney in a power plant is governed by

  10. A.

     The draft to be created

    B.

     Limitation of construction facilities

    C.

     Control of pollution

    D.

     Quantity of flue gases to be handled


  11. On Millier chart, the constant pressure lines

  12. A.

     Diverge from left to right

    B.

     Diverge from right to left

    C.

     Are equally spaced throughout

    D.

     First rise up and then fall


  13. The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.

  14. A.

     Same

    B.

     Less

    C.

     More

    D.

     None of these


  15. Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will

  16. A.

     Boil

    B.

     Flash i.e. get converted into steam

    C.

     Remain as it was

    D.

     Cool down


  17. Clearance ratio is the ratio of

  18. A.

     Clearance volume to the swept volume

    B.

     Clearance volume to the volume at cut-off

    C.

     Volume at cut-off to the swept volume

    D.

     Swept volume to the clearance volume


  19. Expansion ratio is the ratio of

  20. A.

     Swept volume to the volume at cut-off

    B.

     Clearance volume to the swept volume

    C.

     Volume at cut-off to the swept volume

    D.

     Swept volume to the clearance volume