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A Ni-based superalloy has 0.2 μm thick oxide layer. When placed in a burner rig to test for oxidation, it was observed to grow to 0.3 μm in 1 h. If the superalloy follows a parabolic oxidation law (x2 = a + bt, where x is the thickness, t is the time, and a and b are constants) what is the thickness after one week?
a flow of liquid glycerine flows around an engine cooling it as it absorbs energy. the glycerine enters the engine at
Draw a circuit diagram to provide rotary actuation in both directions using a single direction pump - Explain the limitations of this circuit in terms of 'speed control'.
two channels are welded to a rolled w section as shown. determine the moments of inertia and the radii of the gyration
consider a cylinder containing 4 moles of compressed argon to 10 bar and 298 k. the cylinder is housed in a big lab
water at 20 bar 400degc enters a turbine operating at steady state and exits at 1.5 bar. stray heat transfer and
A process uses an oil of density 800 kg.m-3 and viscosity 80 mPa.s at a rate of 0.72 m3.h-1. Determine the rate of flow in each pipe
Two tanks contain steam, and they are both connected to a piston/cylinder. Initially the piston is at the bottom and the mass of the piston is such that a pressure of 1.4 MPa below it will be able to lift it.
State the name and purpose of the components shown in the circuit diagram. Explain the operation of this circuit. Explain the limitations of this circuit in terms of 'speed control'
A 168-grain bullet is accelerated in a 20 inch barrel and leaves the muzzle at 2800 ft/s. A) Determine the work done on the bullet by all external forces while the bullet is traveling in the barrel. B) Determine the kinetic energy of the bullet at th..
steam at 7 bars and temperature t enters an adiabatic mixing tank. compressed water at 40 c and 7 bars enters at
A Pitot tube measures the total pressure on an airplane flying at sea level as 1.07 x 10^5 N/m^2. What is the velocity of the airplane?
Anaerobic digestion is a proven means of producing methane from livestock waste. To provide for the space heating, water heating, and cooking needs of a typical farm dwelling in your locale, determine the size of the anaerobic digester and the num..
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