A. sketch a small-signal model of the circuit in your pre-lab, replacing the transistor with its small-signal model (use the t-model and ignore r o ) . label the base of the transistor as vin j. e., the small-signal voltage at the input. what are the values of g m and ? r e what is the ratio of 172 pan you annrovimata it?

At steady state, air enters an insulated duct of varying cross-sectional area (similar to a nozzle or diffuser) at 200 kpa, 52°c with a mass flow rate of 0.5 kg/s. at the duct exit, the pressure of the air is 100 kpa, the velocity is 255 m/s, and the cross-sectional area is 2 x 10-3 m^2. assuming an ideal gas model, determine: a)-find the specific volume of the air at the exit, in m3/kg. b)- the temperature of the air at the exit, in k. c)-the velocity of the air at the inlet, in m/s. d)-the inlet cross-sectional area, in m^2.