Which EMOSFET amplifier configuration has drain at ac ground

Which E-MOSFET amplifier configuration has drain at ac ground. a. Common Gate b. Common Source c. Source Follower 2. Reducing all dc sources to zero in a transistor is one of the steps in getting the a. DC solution b. AC solution c. Q-point 3. The small signal equivalent circuit of a transistor is derived from the original circuit by shorting all a. DC sources b. AC sources c. Both 4. Voltage divider bias with source resistance Rs in an E-MOSFET is noted for its a. High voltage gain b. Stability c. High output resistance 5. If the gate supply voltage increases in an E-MOSFET. the Q point drain current of the transistor a. Increases b. Stays the same c. Decreases

Solution

1Q)Answer:C

Source follower has drain at ac ground

2Q)

Answer: B

Inorder to get Q_point we will perform DC analysis by making all Ac sources to zero

Here Reducing DC sources Implies AC analysis

3Q) Answer: A

Small signal equivalent circuit is obtained by shorting all DC sources

4Q)Answer; B

For stability purpose we will use Voltage divider with source Resistance

5Q) Answer; B

Gate Voltage Doesnt effect the Q_point values hence remains as same