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  1. Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

  2. A.

     Malleable iron

    B.

     Grey cast iron

    C.

     Chilled cast iron

    D.

     White cast iron


  3. Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

  4. A.

     Malleable iron

    B.

     Grey cast iron

    C.

     Chilled cast iron

    D.

     White cast iron


  5. Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

  6. A.

     Output & fineness

    B.

     Velocity

    C.

     Both A & B

    D.

     None of these


  7. Satellites burn off during re-entry to earth's atmosphere, because of the

  8. A.

     Combustion with air

    B.

     Gravitational pull by earth

    C.

     Friction with earth's atmosphere

    D.

     Loss in weight of the satellite


  9. Which of the following is used to produce draught in the locomotive boilers ?

  10. A.

     Chimney

    B.

     Induced draught fan

    C.

     Forced draught fan

    D.

     Steam jet arrangement


  11. Hydrocyclone is a

  12. A.

     Crusher

    B.

     Wet classifier

    C.

     Dry classifier

    D.

     Magnetic separator


  13. Hydrogen can be

  14. A.

     Used in I.C. engines as fuel

    B.

     Liquefied & stored under cryogenic conditions

    C.

     Produced by electrolysis of water

    D.

     All of the above


  15. In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is

  16. A.

     Less

    B.

     More

    C.

     Equal

    D.

     Unpredictable


  17. In inventory control theory, the economic order quantity (EOQ) is the

  18. A.

     Lot size corresponding to break even analysis

    B.

     Average level of inventory

    C.

     Optimum lot size

    D.

     None of these


  19. Gross & Net calorific values will be the same for

  20. A.

     Methane

    B.

     Propane

    C.

     Carbon monoxide

    D.

     Hydrogen