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Chemical Engineering :: Chemical Engineering Basics-2

  1. Thermistors are used in __________ devices.

  2. A.

     Voltage measuring

    B.

     Temperature measuring

    C.

     Temperature compensating

    D.

     Both B & C

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  3. More than 1000 tons refrigeration capacity plants are usually of __________ type.

  4. A.

     Vapour compression

    B.

     Vapour absorption

    C.

     Air refrigeration

    D.

     None of these

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  5. The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam.

  6. A.

     Wetness

    B.

     Mass flow rate

    C.

     Both A & B

    D.

     Neither A nor B

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  7. Addition of __________ in steel can help in increasing the depth of hardness.

  8. A.

     Nickel

    B.

     Chromium

    C.

     Vanadium

    D.

     Tungsten

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  9. A solar cell converts the sunlight directly into __________ energy.

  10. A.

     Thermal

    B.

     Electrical

    C.

     Mechanical

    D.

     Chemical

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  11. Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________ hardness.

  12. A.

     Scratch

    B.

     Indentation

    C.

     Dynamic

    D.

     Rebound

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  13. In case of fluid moving machineries, the relationship between saturation temperature and pressure decides the process of

  14. A.

     Water hammer

    B.

     Cavitation

    C.

     Flow separation

    D.

     Turbulent mixing

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  15. Pressure gauges are never connected directly to the live steam line; rather a loop or syphon is interposed as close as possible to the pressure gauge. This is done to

  16. A.

     Avoid the overheating of the tubes & bellows which operate them to minimise error and damage

    B.

     Form a seal of water by steam condensate to fill the tube or bellows at the pressure being measured

    C.

     Both 'a' & 'b'

    D.

     Avoid the static head error introduced by steam entry

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  17. Which of the following materials has the poorest electrical conductivity?

  18. A.

     Carbon

    B.

     Aluminium

    C.

     Silver

    D.

     Stainless steel

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  19. Material having maximum density is

  20. A.

     Plutonium

    B.

     Osmium

    C.

     Titanium

    D.

     Uranium

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