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Brazing filler metal used for joining steel plates

A. Melts below the melting points of base metals

B. Melts below 300°C

C. Is copper phosphorous alloy

D. Is copper

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  1. The same volume of all gases is representative of their
  2. __________ is not a case hardening process.
  3. Photographic plates are coated with
  4. A steam carrying pipeline is insulated with two layers of insulating materials with the inferior insulation…
  5. __________ stress cannot be sustained by a fluid in equilibrium.
  6. A material subjected __________ must have high resilience.
  7. The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation…
  8. Which of the following forces does not act on a fluid at rest?
  9. The Al2O3 content of cryolite in Hall- Heroult cell is maintained between __________ percent.
  10. Earing is a defect found in steels after the following metal working operation.
  11. Exposure to __________ accelerates the degradation of plastics.
  12. Basic open hearth furnace (BOF) is not used for producing __________ steel.
  13. Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at…
  14. All of the following alloying elements of steel increases hardness but sacrifice ductility, except
  15. __________ metal is used as a bearing liner material.
  16. One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C).…
  17. Out of the following the refractive index is the highest for
  18. Nickel is a __________ material.
  19. Euler number is defined as the ratio of inertia force to __________ force.
  20. Titanium is produced by __________ of Ti Cl4.
  21. Brittleness induced due to the presence of sulphur in steel can be reduced by adding
  22. Cementite is in the lamellar form in the __________ phase of steel.
  23. Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C…
  24. Which of the following if present in iron ore, enhances its value?
  25. When the wavelength of incident X-rays increases, the angle of diffraction
  26. Material of construction of the electrode used in the electric resistance welding is
  27. Stainless steel is welded using
  28. Tempering of a material does not improve its
  29. Which of the following has the least value of ultimate tensile strength (UTS)?
  30. Which of the following is prone to cup and cone fracture?