Explain, with reasons, whether the LTIC systems described by the following differential equations are (i) stable or unstable in the BIBO sense) asymptotically stable, unstable, or marginally stable. Recall that the symbol D stands for , while D2 for (a) (D +8D 12)y(t) (D 1)(t). (b) D(D23D +2)y(t) (D5)(t) (c) D2(D2+2)y(t)=x(t). (d) (D1)(D2 6D 5)y(t) (3D1(t)

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.