Question: The gain of an amplifier without feedback is 100 db. If a negative feedback of 3 db is applied, the gain of the amplifier will become______________?

• 1. 5 db
• 2. 300 db
• 3. 103 db
• 4. 97 db

Question: Emitter follower is used for ________________?

• 1. Current gain
• 2. Impedance matching
• 3. Voltage gain
• 4. None of the above

Question: The voltage gain of an emitter follower is _____________?

• 1. Much less than 1
• 2. Approximately equal to 1
• 3. Greater than 1
• 4. None of the above

Question: If voltage feedback (negative) is applied to an amplifier, its output impedance ______________?

• 1. Remains the same
• 2. Is increased
• 3. Is decreased
• 4. None of the above

Question: An emitter follower has ______________input impedance?

• 1. Zero
• 2. Low
• 3. High
• 4. None of the above

Question: Emitter follower is a _______________circuit?

• 1. Voltage feedback
• 2. Current feedback
• 3. Both voltage and current feedback
• 4. None of the above

Question: When a negative voltage feedback is applied to an amplifier, its bandwidth_____________?

• 1. Is increased
• 2. Is decreased
• 3. Remains the same
• 4. Insufficient data

Question: Emitter follower is used for________________?

• 1. Current gain
• 2. Impedance matching
• 3. Voltage gain
• 4. None of the above

Question: When voltage feedback (negative) is applied to an amplifier, its input impedance _______________?

• 1. Is decreased
• 2. Is increased
• 3. Remains the same
• 4. None of the above

Question: The leakage current in CE arrangement is____________that in CB arrangement?

• 1. more than
• 2. less than
• 3. the same as
• 4. none of the above