For the common source amplifier circuit to the right, assume VDD = 3V, μn = 350 cm²/Vs, Cox = 3.835x107 F/cm², Vthn = 0.7 V, W/L = 50/0.5, RD = 2 kQ2. Ignore channel length modulation (i.e. λn = 0). (a) What is the small-signal voltage gain if M₁ is in saturation region with IDS = 1 mA? (b) What input voltage places M1 at the edge of saturation region (i.e. when VDS(sat))? What is the small-signal voltage gain under this = VDS condition? Vin VDD RD Vout (c) What input voltage drives M1 into the linear region by 50 mV (i.e. when VDS = VDS(sat) - 50 mV)? What is the small-signal voltage gain under this condition? (Note: You will need to use the expressions for gm and ro derived from the linear region current equation.) Suppose the same common source amplifier 1 V to 2.5 V. All device and circuit parameters stay the same. to provide an output swing from (a) Calculate the DC input voltages that yield Vout = 1 V and Vout = 2.5 V. (b) Calculate the drain current and the transconductance of M1 for both cases. (c) How much does the small-signal gain, gm(ro//RD) = gmRD vary as the output goes from 1 V to 2.5 V? (Variation of small-signal gain can be viewed as nonlinearity)

A multiple choice examinations has 200 questions each with 4 possible answers of which only one is correct. What is the probability that sheers guess work yields from 25 to 30 correct answers for 80 of the 200 problems about which the student has no knowledge? Your answer

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Refer to the National Electrical Code® or the working drawings when necessary. Where applicable, responses should be written in complete sentences. For problems 1 and 2, six luminaires, similar to Style E used in the Commercial Building, are to be installed in a room that is 12 ft x 18 ft (~3.7 m x ~5.5 m) with a 9 ft (2.8 m) floor-to-ceiling height. The spacing ratio for the luminaire is 1:0. 1. The maximum distance that the luminaires can be separated and achieve uniform illuminance is ft ( m). For problems 2-5, two luminaires, 8 ft (2.5 m) and 4 ft (1.2 m) in length with dimensions as shown in Figure 15-7, are to be installed in tandem (end to end). The end of the long luminaire is to be 2 ft (600 mm) from the wall. 2. The center of the outlet box should be roughed in at ft ( m) from the wall. 3. The first support should be installed at the wall. ft ( m) from 4. The second support should be installed at from the wall. ft ( m) 5. The final support should be installed at the wall. ft…