when engineers disagree with their employees they may engage in organizational disobedience. Describe three types of organizational disobedience (by contrary action,by nonparticipation, by protest.)

Find out about the nominal cruise altitudes of any three aircraft types (you can also give a range of values, and cite the references). When you do the flight performance analyses at those altitude, you will need to use the gravitational acceleration and in most cases the sea level value g0 is used. Let us know what you think about that.

Topic: DCS

What is the difference between DCS Network Communication Protocol and Field Communication Protocol?

1- Comment on the effects of changing the position of G on the position of

metacentre.

2- Explain how unstable equilibrium might be achieved?

(Fluid Subject)

a)Using MIL STD 105E, find the sample size for inspection level III, normal inspection, AQL = 1.5%, and lot size of 1000. Determine the sample size.

b)For inspection level I, tightened inspection, AQL = 6.5%, and lot size = 500, find the sample size using MIL STD 105E.

Please discuss 4 major regions for phase change heat transfer

Answer the following questions:

a) In a wall without heat generation, with temperatures T0 and T1, if the heat in T0 is adiabatic, what phenomena can occur at the end of the wall?

b) What are the conditions for Despicable Convective Resistance and negligible Conductivity?

c) In what case, can they be considered as concentrated or finned parameters?

A cylinder with a 20 inch stroke and a 4:3 area ratio with a bore of 6 inch diameter takes 4 seconds to extend. What is the flow required for extention?

1- What is the continuum assumption? Why do we make this assumption in fluid mechanics?

2-Describe Newtonian and non- Newtonian fluids and give examples?

3-Define Mach number, and describe compressible and incompressible flows?

For an alloy that consists of 74.9 g copper, 108.0 g zinc, and 7.3 g lead, what are the concentrations of (a) Cu, (b) Zn, and (c) Pb in weight percent? The atomic weights of Cu, Zn, and Pb are 63.54, 65.39, and 207.2 g/mol, respectively.

Air undergoes a polytropic process in a piston–cylinder assembly from p₁ = 1 bar, T₁ = 295 K to p₂ = 3 bar. The air is modeled as an ideal gas and kinetic and potential energy effects are negligible.
For a polytropic exponent of 1.2, determine the work and heat transfer, each in kJ per kg of air,
(1) assuming constant c_v evaluated at 300 K.
(2) assuming variable specific heats.

Why do materials fail at lower loads if stress is cyclic? Describe fatigue mechanisms for alloys with pre-cracked structures.

FIreclay brick (ρ=2050 kg/m3, cp=960 J/kg-K, k=1.1 W/m-K) with dimensions 0.06 m x 0.09 m x 0.20 m is removed from a kiln at 1600K and cooled in air at 40C with h = 30 W/m2-K. What is the temperature at the corner of the brick after 50 minutes of cooling? Give your answer in degrees C.

a simple ideal Brayton cycle with air as the working fluid has a pressure ratio of 10. The air enters the compressor at 520 R and the turbine at 2000 R. Accounting for the variation of specific heats with temperature, determine (a) the ait temperature at the compressor exit, (b) the back work ratio, and (c) the thermal efficiency.