AC Amplifier Question & Answers October 22, 2022 By WatElectronics This article lists 30 AC Amplifier MCQs for engineering students. All the AC Amplifier Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of AC Amplifier. The operational amplifiers can respond to both direct current signals and alternating current signals. Alternating current amplifiers that is AC amplifiers are categorized into two types they are inverting AC amplifiers and non-inverting AC amplifiers. Ideal operational amplifiers are zero output impedance, infinite frequency bandwidth, infinite gain for differential input, and infinite input impedance. The open loop voltage gains and input resistance ideal values are infinite in amplifiers. The gain bandwidth product, pull power bandwidth, and open loop gain/phase has come under frequency domain specifications. The slew rate, settling time, and overshoot come under time domain specifications. The open loop voltage gain, input resistance, output resistance, and supply voltage are the parameters of amplifiers. The thermostat controlling room temperature, and pupil diameter adjustment to light intensity are examples of negative feedback. The negative feedback helps to overcome distortion and non-linearity. 1). The unity gain bandwidth of an op-amp is defined as product of closed loop voltage gain and ___________________? Bandwidth of feedback Thermal drift Current drift None of the above None Hint 2). What is the standard form of GBWP? Gain Bandwidth Proportion Gain Bandwidth Portion Gain Bandwidth Product None of the above None Hint 3). Which one of the following one comes under time domain specification? Overshoot GBWP FPWP None of the above None Hint 4). The AC amplifiers are categorized into _________________ types? One Two Three Four None Hint 5). The ratio of input bias current divided by change in temperature is known as _______________? Input bias current drift Thermal drift in input bias current Input offset voltage drift None of the above None Hint 6). The A is equal to Av is the gain of the _______________ feedback? Voltage series Voltage shunt Voltage series and shunt None of the above None Hint 8). The ease of implementation of class A amplifiers are __________________? Very good Poor Fair Better None Hint 9). The figure shown below is a circuit diagram of AC amplifier using ______________ topology? Feedback resistor Resistive T-network Alternative T-network None of the above None Hint 10). The AC characteristics of an operational amplifier is _________________? Input bias current Input offset current Slew rate None of the above None Hint AC Amplifier MCQ for Quiz 11). The power capability is _________________ in class AB amplifier? Good Very good Medium/high Poor None Hint 12). The power efficiency is poor in ___________________ type of amplifier? Class A Class AB Class F None of the above None Hint 13). The figure shown below is a circuit diagram of ________________ amplifier? AC amplifier Differential amplifier Power amplifier None of the above None Hint 14). The A is equal to Ai is the gain of the _______________ feedback? Voltage series Current shunt Voltage series and shunt None of the above None Hint 15). The ratio of input offset voltage divided by change in temperature is known as _______________? Input bias current drift Thermal drift current Input offset voltage drift None of the above None Hint 16). The figure shown below is a circuit diagram of AC amplifier using ______________ topology? Feedback resistor Resistive T-network Alternative T-network None of the above None Hint Read more about Amplifiers 17). Which one of the following one comes under frequency domain specification? Overshoot GBWP Slew rate None of the above None Hint 18). The A is equal to Gm is the gain of the _______________ feedback? Voltage series Current shunt Current series None of the above None Hint 19). The figure shown below is a schematic diagram of _________________ amplifier? AC amplifier DC amplifier Power amplifier None of the above None Hint 20). The DC characteristics of an operational amplifier is _________________? Input bias current Frequency response Slew rate None of the above None Hint AC Amplifier MCQ for Exams 21). The A is equal to Rm is the gain of the _______________ feedback? Voltage series Current shunt Current series Voltage shunt None Hint 22). The figure shown below is a circuit diagram of AC amplifier with ________________ supply voltage? Double Single Tripple None of the above None Hint 23). When i=100μA and C=30PF then the slew rate is equal to _________________? 3.33V/μs 4 V/μs 5 V/μs None of the above None Hint 24). The input voltage range, power consumption, and the output voltage swing are the parameters of _________________ factor which affects op-amp? Supply voltage Temperature Frequency None of the above None Hint 25). The ratio of input offset current divided by change in temperature is known as _______________? Input bias current drift Thermal drift in input offset current Input offset voltage drift None of the above None Hint 26). The figure shown below is a circuit diagram of _________________ amplifier? Thermocouple Thermistor DC amplifier AC amplifier None Hint 27). Which one of the following parameters consider for AC applications? Input offset voltage and current drifts Gain bandwidth product Input and output resistance All of the above None Hint 28). If output voltage is equal to 30 V and input voltage is equal to 2V then the AC voltage gain is _________________? 10 V 15 V 23 V 45 V None Hint 29). The operational amplifiers used in ______________ modes in open loop configurations? Two Three Four Five None Hint 30). The op-amp parameters input offset current and input offset voltage are not constants but vary with ___________________ factors? Temperature Slew rate Frequency response All of the above None Hint For More MCQs Common Collector Amplifier Question & Answers. 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