Question: The output impedance of an emitter follower is______________?

• 1. High
• 2. Very high
• 3. Almost zero
• 4. Low

Question: When negative voltage feedback is applied to an amplifier, its voltage gain ____________?

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

Question: The value of negative feedback fraction is always _______________?

• 1. Less than 1
• 2. More than 1
• 3. Equal to 1
• 4. None of the above

Question: If the output of an amplifier is 10 V and 100 mV from the output is fed back to the input, then feedback fraction is_____________?

• 1. 10
• 2. 1
• 3. 01
• 4. 15

Question: The gain of an amplifier with feedback is known as____________gain?

• 1. Resonant
• 2. Open loop
• 3. Closed loop
• 4. None of the above

Question: If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately________________?

• 1. 500
• 2. 100
• 3. 1000
• 4. 5000

Question: When current 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: A feedback circuit usually employs _________________ network?

• 1. Resistive
• 2. Capacitive
• 3. Inductive
• 4. None of the above

Question: Negative feedback is employed in __________________?

• 1. Oscillators
• 2. Rectifiers
• 3. Amplifiers
• 4. None of the above

Question: When current feedback (negative) is applied to an amplifier, its output impedance ________________?

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