Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.

A. Copper

B. Steel

C. Aluminium

D. Brass

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Natural water contains approximately __________ percent of heavy water.
  2. Carnot cycle is also termed as the constant __________ cycle in thermodynamics.
  3. The stress at which extension of the material takes place more rapidly as compared to the increase in…
  4. Pick out the wrong statement.
  5. Steels with high carbon equivalent have poor Weldability, because in these steels during welding
  6. Vibration upto 100 kilo hertz can be most accurately measured by a __________ type accelerometer.
  7. The joint for soldering is supported by binding wire made of
  8. Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same…
  9. The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters…
  10. Induced draft fans provided in large thermal power plant boilers have __________ blades.
  11. Lap joints are preferred over butt joints in soldering/brazing, because these joints are
  12. Density in the solid state is slightly less than that in its liquid state, in case of
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  14. Difference at any instant between the value of the controlled variable and the set point is called the
  15. A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C…
  16. Which of the following is used to produce draught in the locomotive boilers?
  17. The refractory lining of the bottom in a basic electric arc furnace is made of
  18. Which of the following is the most suitable abrasive for grinding high tensile strength materials?
  19. If a solid is compressed adiabatically in its elastic range, its __________ remains constant
  20. Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying…
  21. The best lubricants for a machine working at high temperature & load is
  22. Fibre reinforced plastic (FRP) are
  23. The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the…
  24. Normalising does not __________ of a metal.
  25. Out of the following, which will fracture most readity, when hit with a hard hammer?
  26. An ideal material for making cooking vessels should have
  27. Factor of safety is the ratio of the __________ stress to the working stress.
  28. Annealing of cast iron
  29. The elastic strain in copper is due to the
  30. The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where,…