Consider circuit below with VDD = VSS = 5 V, I0 = 500 µA, RL = 7 kΩ, and RSIG = 1kΩ. For MOSFET assume VT = 2 V, (W/L)*kn’ = 4 mA/V2 , and λ = 0 V -1 . 1. Sketch the small signal equivalent circuit and find the values of the small signal parameters; 2. Design RD for maximum output voltage swing; 3. Find the ac voltage gain from signal to load; 4. Find the ac current gain from signal to load.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.