Question: The purpose of a coupling capacitor in a transistor amplifier is to ___________________?

• 1. Increase the output impedance of transistor
• 2. Protect the transistor
• 3. Pass a.c. and block d.c.
• 4. Provide biasing

Question: An amplifier has a power gain of 100. Its db gain is ________________?

• 1. 10 db
• 2. 20 db
• 3. 40 db
• 4. None of the above

Question: In order to get more voltage gain from a transistor amplifier, the transistor used should have_________________?

• 1. Thin base
• 2. Thin collector
• 3. Wide emitter
• 4. None of the above

Question: In the d.c. equivalent circuit of a transistor amplifier, the capacitors are considered__________________?

• 1. Short
• 2. Open
• 3. Partially short
• 4. None of the above

Question: The purpose of emitter capacitor (i.e. capacitor across RE) is to ______________?

• 1. Avoid voltage gain drop
• 2. Forward bias the emitter
• 3. Reduce noise in the amplifier
• 4. None of the above

Question: The purpose of d.c. conditions in a transistor is to___________________?

• 1. Reverse bias the emitter
• 2. Forward bias the collector
• 3. Set up operating point
• 4. None of the above

Question: In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ___________________?

• 1. Short
• 2. Open
• 3. Partially open
• 4. None of the above

Question: If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is____________________?

• 1. RL + RC
• 2. RC || RL
• 3. RL – RC
• 4. RC

Question: The purpose of capacitors in a transistor amplifier is to___________________?

• 1. Protect the transistor
• 2. Cool the transistor
• 3. Couple or bypass a.c. component
• 4. Provide biasing

Question: In a CE amplifier, voltage gain =____________________ x RAC/Rin?

• 1. α
• 2. (1 + α)
• 3. (1+ β)
• 4. β