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The equation gz+ constant along a stream line holds true for
  • a)
    Steady, frictionless, compressible fluid
  • b)
    Steady, uniform, incompressible fluid
  • c)
    Steady, frictionless, incompressible fluid
  • d)
    Unsteady incompressible fluid
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The equationgz+ constant along a stream line holds true fora)Steady, ...
PdA - (P + dP) dA - ρgdAds sin θ = 0
⇒dPρ+VdV+gdz=0⇒dPρ+VdV+gdz=0
Assumptions in Bernoulli’s equation:
i) fluid is ideal
ii) flow is steady
iii) flow is continuous
iv) fluid is incompressible
v) flow is non-viscous
vi) flow is irrotational
vii) applicable along a stream line
where,
  • The line representing the sum of all 3 head is known as total energy line or total head line
  • Line joining the points of piezometric heads is known as hydraulic grade line or piezometric line.
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The equationgz+ constant along a stream line holds true fora)Steady, frictionless, compressible fluidb)Steady, uniform, incompressible fluidc)Steady, frictionless, incompressible fluidd)Unsteady incompressible fluidCorrect answer is option 'C'. Can you explain this answer?
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