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  1. __________ is not used as a material of construction in thermocouples.

  2. A.
    Alumel
    B.
    Rhodium
    C.
    Constantan
    D.
    Duralumin

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  3. Coarse grained steels have

  4. A.
    low toughness
    B.
    no tendency to distort
    C.
    high density
    D.
    very high toughness

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  5. Steel balls are manufactured by cold heading. After cold forming, they are subjected to

  6. A.
    tempering
    B.
    normalising
    C.
    stress-relieving
    D.
    artificial ageing

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  7. Free oxygen is removed from boiler feed water, because it

  8. A.
    reduces heat transfer co-efficient.
    B.
    is corrosive.
    C.
    causes explosion.
    D.
    none of these.

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  9. Out of the following, the materials having maximum magnetic permeability is

  10. A.
    silicon steel (Si = 4%)
    B.
    cast iron
    C.
    wrought iron
    D.
    mild steel

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  11. A material being tested for endurance strength is subjected to the __________ load.

  12. A.
    impact
    B.
    completely reversed
    C.
    dynamic
    D.
    static & dynamic

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  13. Pick out the wrong statement.

  14. A.
    Molecules with symmetrical arrangements (.e.g. CH4 or CCl4) are nonpolar.
    B.
    Generally, nonpolar compounds are chemically inactive, conduct electricity poorly and do not ionise.
    C.
    Most of the hydrocarbons are nonpolar.
    D.
    none of these.

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  15. Old cycle handles are coated with nickel using

  16. A.
    cementation.
    B.
    spray coating.
    C.
    galvanising process.
    D.
    tinning process.

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  17. CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because of the fact that the

  18. A.
    specific fuel consumption is very low due to the use of heavy water.
    B.
    fuel cost is much lower than that used in pressurised water or boiling water reactor.
    C.
    heavy water is used both as coolant as well as moderator.
    D.
    both 'b' & 'c'

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  19. Pick out the wrong conversion of absolute & kinematic viscosities.

  20. A.
    1 stoke = 1 cm2/sec.
    B.
    1 N.sec/m2 = 10 paise.
    C.
    1 stoke = 1 m2/sec.
    D.
    1 m2/sec = 104 stokes.

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