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

A. Alumel

B. Rhodium

C. Constantan

D. Duralumin

Correct Answer : D.


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  2. Between 230 and 370°C, blue brittleness is caused in mild steel because of the
  3. Isotropic materials have the same __________ in all directions.
  4. Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
  5. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm2.
  6. The pressure outside a bubble/droplet of liquid is __________ the internal pressure.
  7. Fire in fuel gas pipelines is extinguished most effectively by
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  10. Superheating of steam is done at constant
  11. Solute atoms which cause yield point phenomenon in mild steel are/is
  12. Basicity of the slag in Indian blast furnace is in the range of
  13. __________ wire is never used for making the heating element.
  14. Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
  15. At absolute zero temperature, for any reaction involving condensed phases
  16. Nickel is a __________ material.
  17. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute…
  18. Resilience of a bolt can be increased by increasing its
  19. In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean…
  20. What is the percentage of chromium in 18-4-1 high speed steel?
  21. Corona discharge is related to the operation of a/an
  22. __________ is used as a material of construction for the blade of power saw.
  23. Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
  24. The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the…
  25. All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in…
  26. Coarse grained steels have
  27. Hydro-cyclone is a
  28. Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about __________…
  29. Age hardening is connected with
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