EET 293 - Hydraulics and Pneumatics

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EET 293 - Hydraulics and Pneumatics
2013-04-24 17:48:18
EET 293 Hydraulics Pneumatics

EET 293 - Hydraulics and Pneumatics
Show Answers:

  1. what is the formula for gamma (γ)?
    γ= weight / velocity

    γ= density * gravity

    γ= specific weight
  2. what does the greek symbol gamma stand for?
  3. γ = specific weight
  4. what is the formula for weight?
  5. w = mass * gravity
  6. what is the formula for force?
    Force = mass * acceleration

    force = pressure * area
  7. what is the formula for pressure?
    pressure = (force) / (area)

    pressure = weight / area

    pressure = gamma * height
  8. what is specific gravity?
    Specific gravity is the ratio of the density of a substance compared to the density (mass of the same unit volume) of a reference substance. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. The reference substance is nearly always water for liquids or air for gases
  9. what is the specific gravity formula for hydraulic oil?
  10. SG = γ of oil  /  γ of water
  11. What is the specific weight of water?
    SG H2O = 62.4 lb/ft3

    • SG H2O = 9800 N/m3
  12. what is "rho"?
  13. Density
  14. what is the formula for density?
    ρ = mass / velocity

    ρ = gamma / gravity
  15. what is the value of atmospheric pressure?
    14.7 psia

    0 psig
  16. what is "mu"?
    μ = viscosity.

    μ abs = absolute (dynamic) viscosity
  17. what is the unit for absolute (dynamic) viscosity?
  18. μ = pascal-second (Pa·s) (equivalent to N·s/m2, or kg/(m·s))