Given vs(t) = [5cos 1000t + 4cos2000t + 3cos 4000t] V is the input of the system below. A 10V DC signal is added to vs(t) using a summing circuit and this DC offset signal is the input to a multiplier that multiplies the signal and a high frequency sinusoidal signal cos(100,000t) V. Plot the power spectrum of vout(t) in dBW.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?