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Chemical Engineering :: Chemical Engineering Basics-2

  1. Classification of metal forming processes into hot and cold working is based on the following parameters.

  2. A.

     Stacking fault energy

    B.

     Recrystallisation temperature

    C.

     Solidus temperature

    D.

     Transformation temperature


  3. Working of linear variable differential transducer (LVDT) is based on the principle of variable

  4. A.

     Capacitance

    B.

     Resistance

    C.

     Mutual inductance

    D.

     None of these


  5. Silicon percentage in acid resistant cast iron is about

  6. A.

     4

    B.

     8

    C.

     14

    D.

     20


  7. Pick out the wrong statement.

  8. A.

     A soft magnetic material should have high permeability and small area of hysterisis loop

    B.

     Poisson's ratio of high melting point metals is more than unity

    C.

     Solders generally melt at less than 185°C

    D.

     Steel produced by B.O.F process is ideally suited for manufacturing flat product


  9. Tungsten in high speed steel is responsible for its

  10. A.

     Toughness & wear resistance

    B.

     Cold hardness

    C.

     Hot hardness

    D.

     Sharp cutting edge


  11. In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is

  12. A.

     More

    B.

     Less

    C.

     Equal

    D.

     Much more


  13. Titanium alloys are welded using the Following process:

  14. A.

     TIG welding

    B.

     Submerged arc welding

    C.

     Butt welding

    D.

     Electron beam welding


  15. The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress in compression and vice versa; is termed as the

  16. A.

     Work hardening

    B.

     Bauschinger effect

    C.

     Creeping effect

    D.

     Stress recovery effect


  17. Ester is formed, when an alcohol reacts with

  18. A.

     Carboxylic acid

    B.

     Aldehyde

    C.

     Ketone

    D.

     Ether


  19. A jet engine turbine blade is normally manufactured by

  20. A.

     Forging

    B.

     Shell moulding

    C.

     Investment casting

    D.

     Pressure die casting