Question: For proper operation of the transistor, its collector should have___________________?

• 1. Proper forward bias
• 2. Proper reverse bias
• 3. Very small size
• 4. None of the above

Question: If biasing is not done in an amplifier circuit, it results in________________?

• 1. Decrease in the base current
• 2. Unfaithful amplification
• 3. Excessive collector bias
• 4. None of the above

Question: The Q of a tuned circuit refers to the property of_______________?

• 1. Sensitivity
• 2. Fidelity
• 3. Selectivity
• 4. None of the above

Question: In a parallel LC circuit, if the signal frequency is decreased below the resonant frequency, then________________?

• 1. XL decreases and XC increases
• 2. XL increases and XC decreases
• 3. Line current becomes minimum
• 4. None of the above

Question: The Q of a tuned amplifier is 50. If the resonant frequency for the amplifier is 1000kHZ, then bandwidth is __________________?

• 1. 10kHz
• 2. 40 kHz
• 3. 30 kHz
• 4. 20 kHz

Question: For frequencies above the resonant frequency , a series LC circuit behaves as a ____________load?

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

Question: A class C amplifier always drives _____________load?

• 1. A pure resistive
• 2. A pure inductive
• 3. A pure capacitive
• 4. A resonant tank

Question: For frequencies below the resonant frequency , a parallel LC circuit behaves as a ______________load?

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

Question: In the above question, what are the values of cut-off frequencies?

• 1. 140 kHz , 60 kHz
• 2. 1020 kHz , 980 kHz
• 3. 1030 kHz , 970 kHz
• 4. None of the above

Question: At parallel resonance, the phase angle between the applied voltage and circuit current is _____________?

• 1. 90o
• 2. 180o
• 3. 0o
• 4. None of the above