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  1. Hot working of lead is carried out at

  2. A.
    75°C
    B.
    373°K
    C.
    150°C
    D.
    room temperature

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  3. An engineer's hammer is made of high __________ steel.

  4. A.
    carbon
    B.
    speed
    C.
    silicon
    D.
    chromium

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  5. Impeller & casing of centrifugal pump handling corrosive liquid and frequently running under cavitation condition is most prone to __________ corrosion.

  6. A.
    uniform
    B.
    oxygen diffusion
    C.
    pitting
    D.
    inter-granular

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  7. Isotropic materials have the same __________ in all the directions.

  8. A.
    thermal properties
    B.
    elastic properties
    C.
    stresses
    D.
    all (a), (b) & (c)

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  9. The gases used in the treatment of asthma is a mixture of __________ and oxygen.

  10. A.
    helium
    B.
    argon
    C.
    neon
    D.
    none of these

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  11. Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.

  12. A.
    turning
    B.
    dressing
    C.
    forming
    D.
    surface finishing

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  13. Which of the following is the most effective inhibitor of grain growth, when added in small quantity in steel ?

  14. A.
    Manganese
    B.
    Vanadium
    C.
    Cobalt
    D.
    Copper

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  15. A controller action in which there is a con-tinous relation between the values of controlled variable and the rate of change of conrolled output signal is called the __________ action.

  16. A.
    proportional
    B.
    integral
    C.
    derivative
    D.
    none of these

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  17. An ideal fluid is

  18. A.
    viscous & incompressible.
    B.
    non-viscous & compressible.
    C.
    non-viscous & incompressible.
    D.
    viscous & compressible.

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  19. When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the

  20. A.
    partial pressure of water vapour is less than the total pressure.
    B.
    humidity is < 100% & dew point temperature of air has not reached.
    C.
    dew point temperature of air has not reached & air is not saturated fully.
    D.
    air is fully saturated.

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