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  1. With increase in annealing temperature, the following defect density decreases.

  2. A.
    Vacancy
    B.
    Dislocation
    C.
    Grain boundary
    D.
    All of them

  3. Carnot cycle is also termed as the constant __________ cycle in thermodynamics.

  4. A.
    entropy
    B.
    pressure
    C.
    volume
    D.
    heat

  5. Thermistors are used in __________ devices.

  6. A.
    voltage measuring
    B.
    temperature measuring
    C.
    temperature compensating
    D.
    both (b) & (c)

  7. Broaching tools are usually made of

  8. A.
    cermets
    B.
    high speed steel
    C.
    tungsten carbide
    D.
    stellite

  9. Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)

  10. A.
    H
    B.
    H/2
    C.
    H/4
    D.
    H/6

  11. Propulsion of rocket follows from the

  12. A.
    Newton's second law of motion.
    B.
    Newton's third law of motion.
    C.
    law of projectiles.
    D.
    Archimedes principle.

  13. In multipass welds, shot peening is done after each pass to

  14. A.
    close the surface porosity.
    B.
    break the continuity of columnar grains.
    C.
    flatten the weldment.
    D.
    introduce texture in the weld.

  15. Pick out the correct statement.

  16. A.
    Materials exhibiting high elasticity obey Hooke's law.
    B.
    The elastic behaviour of rubber under compression is the same as its behaviour under tension.
    C.
    The damping capacity of a material is due to its plastic deformation.
    D.
    The stress required to cause plastic flow in polycrystalline material is higher as compared to monocrystalline materials due to the presence of grains of different orientations.

  17. Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

  18. A.
    10 atm-1
    B.
    105 atm-1
    C.
    10 (dimensionless)
    D.
    105 (dimensionless)