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A relief valve__________________?
  • (A)  Provides back pressure for a cylinder
  • (B)  Unloads a pump
  • (C)  Is a directional control valve
  • (D)  None of these
Pick out the correct statement pertaining to transition/ entrance length in fluid flow ?
  • (A)  The length of entrance region of pipe, in which full development of fluid flow takes place such that velocity profile does not change downstream, is called the transition length
  • (B)  Transition length for laminar flow of Newtonian fluids in a pipe of diameter ‘d’ is equal to 0.05. D.NRe
  • (C)  Transition length for turbulent flow of Newtonian fluids in a smooth pipe of diameter ‘d’ is equal to 50 D
  • (D)  All