True or False: An ideal op-amp has infinite input impedance and zero output impedance. | Card: 3 / 60 |
What are the two golden rules for ideal op-amps in negative feedback? | Card: 5 / 60 |
B) No input current flows into terminals, and voltage difference between inputs is zero (V+ = V-) | Card: 6 / 60 |
True or False: A common-emitter amplifier provides 180° phase shift between input and output. | Card: 13 / 60 |
True. Common-emitter configuration produces 180° phase shift between input and output signals. | Card: 14 / 60 |
Which amplifier class has maximum theoretical efficiency of 78.5%? | Card: 15 / 60 |
Common-Mode Rejection Ratio measures ability to reject signals common to both inputs | Card: 22 / 60 |
True or False: Emitter followers have high input impedance and low output impedance. | Card: 23 / 60 |
True. Emitter followers (common-collector) have high input impedance and low output impedance. | Card: 24 / 60 |
For cascaded amplifiers, total gain equals | Card: 25 / 60 |
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Calculate output of summing amplifier: R_f=20kΩ, R₁=10kΩ, V₁=0.5V, R₂=5kΩ, V₂=0.2V | Card: 31 / 60 |
True or False: Class A amplifiers have lower distortion but higher power dissipation than Class B. | Card: 33 / 60 |
True. Class A has low distortion but high power dissipation compared to Class B. | Card: 34 / 60 |
What happens to gain-bandwidth product when op-amp configuration changes? | Card: 35 / 60 |
C) Remains constant. GBW is an intrinsic op-amp characteristic that stays constant. | Card: 36 / 60 |
Stabilizes gain, increases bandwidth, reduces distortion, and controls input/output impedances | Card: 40 / 60 |
True or False: Source followers in FET circuits are equivalent to emitter followers in BJT circuits. | Card: 43 / 60 |
Which feedback topology increases both input and output impedances? | Card: 45 / 60 |
False. Common-base provides voltage gain but no current gain (current gain ≈ 1). | Card: 54 / 60 |
What determines the lower cutoff frequency in amplifiers? | Card: 55 / 60 |
An amplifier system needs gain of 1000. Design using two stages with equal gains. | Card: 59 / 60 |






