The normal stress is the same in all directions at a point in a fluid, only when the fluid

A. Is at rest & has zero viscosity

B. Is frictionless

C. Fluid layer has no motion relative to an adjacent layer of fluid

D. is incompressible & frictionless

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

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  1. The most suitable material for die casting is
  2. Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as
  3. Reduction in the grain size reduces the __________ of the material.
  4. The only suitable method for hardening the low carbon steel is case hardening. Which of the following…
  5. A solution which resists change in its pH value on addition of acid/alkali is called the __________…
  6. A common disinfectant used in village wells for disinfection of water is
  7. Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying…
  8. Which one is neutral in character?
  9. Minimum number of members required to form a Public Limited Joint Stock Com-pany is
  10. A fluid is termed as the Newtonian fluid, when the shear stress is __________ the velocity gradient.
  11. Hardening of steel is not possible, unless it is heated __________ critical point.
  12. While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________…
  13. As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint…
  14. Lead is poured into the joint between two- __________ pipes.
  15. Cold cracking in the heat affected zone of a high strength steel weld can take place because of the
  16. Steel produced from phosphatic iron is __________ in nature.
  17. Which of the following is an example of stress corrosion?
  18. For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be
  19. The starting of a car takes time in winter, because the
  20. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal &…
  21. Tumbling is the process of improving the __________ of the materials/parts.
  22. A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal…
  23. Which of the following material handling equipments is not suitable for moving materials in varying…
  24. The transition temperature at which all the ferromagnetic materials become paramagnetic materials is…
  25. Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air…
  26. __________ fluid force is not considered in the Navier-Stokes equation.
  27. Common salt is produced from sea water in India generally by the __________ method.
  28. More than 95% of __________ is present in corundum.
  29. Which of the following pairs is not correctly matched?
  30. __________ is used as a material of construction for the blade of power saw.