Menu
Home / Mechanical Engineering / Steam Boilers and Engines :: Section 5

Mechanical Engineering :: Steam Boilers and Engines

Steam Boilers and Engines - Section 1
Steam Boilers and Engines - Section 2
Steam Boilers and Engines - Section 3
Steam Boilers and Engines - Section 4
Steam Boilers and Engines - Section 5

  1. There is about 15 to 20% of coal saving when an economiser is used in a boiler.

    2. A.

    True
    B.

    False

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. An economiser is generally placed between

    3. A.

    last superheater or reheater and air preheater
    B.

    induced draft fan and forced draft fan
    C.

    air preheater and chimney
    D.

    none of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. In fire tube boilers

    4. A.

    water passes through the tubes which are surrounded by flames and hot gases
    B.

    the flames and hot gases pass through the tubes which are surrounded by water
    C.

    forced circulation takes place
    D.

    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. The efficiency of a boiler is defined as

    5. A.

    ratio of heat actually used in producing steam to the heat liberated in the furnace
    B.

    ratio of the mass of steam produced to the mass of total water supplied in a given time
    C.

    ratio of the heat liberated in the furnace to the heat actually Used in producing steam
    D.

    none of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

    6. A.

    condenser efficiency
    B.

    vacuum efficiency
    C.

    nozzle efficiency
    D.

    boiler efficiency

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers