Analog Electronics
Voltage Series (feedback also called series-shunt feedback) results in

Increase in input impedance & decreases in output impedance
Decrease in input impedance & increase in output impedance
Decreases in both input & output impedances
Increase in both input & output impedances

ANSWER DOWNLOAD EXAMIANS APP

Analog Electronics
Optocouplers combine

 IGBTs and MOSFETs.
 SITs and BJTs.
 Power transistor and silicon transistor.
  Infrared light emitting diode and a silicon photo transistor.

ANSWER DOWNLOAD EXAMIANS APP

Analog Electronics
When a transistor is connected in common emitter mode, it with have

Low input resistance as well as output resistance
Negligible input resistance and high output resistance
Medium input resistance and high output resistance
High input resistance and low output resistance

ANSWER DOWNLOAD EXAMIANS APP