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Chemical Engineering :: Chemical Engineering Basics

  1. Addition of beryllium to copper is done mainly to produce a/an __________ alloy.

  2. A.
    non-sparking & non-magnetic
    B.
    high strength
    C.
    precipitation hardenable
    D.
    corrosion resistant

  3. The product out from a cupola is called

  4. A.
    wrought iron
    B.
    pig iron
    C.
    cast iron
    D.
    none of these

  5. Resilience of a material is important, when it is subjected to

  6. A.
    creep
    B.
    fatigue
    C.
    shock loading
    D.
    galvanising

  7. Existence of velocity potential implies that the fluid is

  8. A.
    irrotational
    B.
    ideal
    C.
    compressible
    D.
    in continuum

  9. The velocity of sound in air is independent of changes in its

  10. A.
    humidity
    B.
    pressure
    C.
    temperature
    D.
    none of these

  11. A boy weighing 110lb climbs up a 50 ft high vertical destination in 100 seconds. Horse power of the boy is __________ hp.

  12. A.
    0.1
    B.
    0.5
    C.
    0.8
    D.
    1

  13. Endurance is a measure of fatigue limit of a metal. Fatigue crack in nitrided machine parts originates

  14. A.
    at the surface.
    B.
    within the core.
    C.
    just below the surface.
    D.
    anywhere on the surface.

  15. Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with

  16. A.
    vanadium & chromium
    B.
    silicon
    C.
    tungsten
    D.
    manganese

  17. Draft allowance given to patterns is for

  18. A.
    compensating the liquid state shrinkage.
    B.
    easy removal of pattern from the mold cavity.
    C.
    providing support for the core placement.
    D.
    compensating the solidification shrinkage.

  19. Which of the following welding processes employs the highest welding temperature ?

  20. A.
    Arc welding
    B.
    Gas welding
    C.
    Thermit welding
    D.
    Resistance welding