Single Stage Transistor Amplifiers

Input impedance is very high ✘ Input impedance is low ✘ Output impedance is very low ✘ None of the above ✔

20 k ohm ✘ 2 k ohm ✘ 10 k ohm ✘ 5 k ohm ✔

The same as ✘ Less than ✘ More than ✘ None of the above ✔

Avoid voltage gain drop ✘ Forward bias the emitter ✘ Reduce noise in the amplifier ✘ None of the above ✔

RC + RE ✘ RC ✘ RC || RE ✘ RC/RE ✔

Protect the transistor ✘ Cool the transistor ✘ Couple or bypass a.c. component ✘ Provide biasing ✔

Increase the output impedance of transistor ✘ Protect the transistor ✘ Pass a.c. and block d.c. ✘ Provide biasing ✔

Transistor will be destroyed ✘ Biasing conditions will change ✘ Signal will not reach the base ✘ None of the above ✔

180° ✘ 0° ✘ 90° ✘ 270° ✔

About 1 ✘ Low ✘ High ✘ Moderate ✔