1. In a common-source amplifier, the output voltage is (a) 180° out of phase with the input (c) taken at the source (e) answers (a) and (c) (b) in phase with the input (d) taken at the drain (f) answers (a) and (d) 2. In a certain common-source (CS) amplifier, Vds = 3.2 V rms and Vgs = 280 mV rms. The voltage gain is (a) 1 (b) 11.4 (c) 8.75 (d) 3.2 = 3. In a certain CS amplifier, RD = 1.0k, Rs 560, VDD = 10 V, and gm = 4500 μS. If the source resistor is completely bypassed, the voltage gain is (a) 450 (b) 45 (c) 4.5 (d) 2.52 4. Ideally, the equivalent circuit of a FET contains (a) a current source in series with a resistance (b) a resistance between drain and source terminals (c) a current source between gate and source terminals (d) a current source between drain and source terminals 5. The value of the current source in Question 4 is dependent on the (a) transconductance and gate-to-source voltage (b) dc supply voltage (c) external drain resistance (d) answers (b) and (c)