Cascade Amplifier Question & Answers October 6, 2022 By WatElectronics This article lists 50 Cascade Amplifier MCQs for engineering students. All the Cascade Amplifier Questions & Answers below include a hint and a link to the relevant topic wherever possible. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Cascade Amplifier. An amplifier consisting of one transistor fails to provide the required bandwidths. Impedance matching provided by such a circuit is poor. Several amplifying stages are combined to overcome the problem of a single transistor amplifier. Multiple amplifiers are merged and form a single device where the bandwidth and the gain product obtained are highly stable. Higher bandwidths and gains are achieved using multi-stage amplifiers. As the stages tend to increase bandwidth increases proportionally after a certain stage it begins to decrease. This is considered to be the downfall of Cascade amplifiers. Network of series connected amplifiers where the outcome of each amplifier fed as input to other amplifiers referred to as Cascade amplifier. Daisy chain configuration is followed in multi-stage amplifiers. LASER pulse driving amplifiers, and RF designs containing power amplifiers are examples of Cascaded amplifiers. To build a new component architecture for desired application a custom amplifier can be cascaded. Output and inputs are highly isolated in cascaded amplifiers. 1). What is the downside of single-stage amplifiers? Unable to Provide Desired Gain Unable to Provide Enough Power Single Transistor Present All Mentioned Above None Hint 2). How do cascade amplifiers differ from single-stage amplifiers? Consists Multiple Transistors Single Transistor Present Doesn’t Provide Required Gain Doesn’t Provide Required Power None Hint 3). What does the initial stage of a cascade amplifier provide for a Differential amplifier? Voltage Gain Current Gain High Common-mode Rejection Current Required None Hint 4). Two-port network formed due to series connected amplifiers is __________? Cascade Amplifiers DC Amplifiers Differential Amplifiers Cascode Amplifiers None Hint 5). Cascading of the stages can increase ________ in amplifiers? Voltage Gain Bandwidth Impedance Current Gain None Hint 6). Total gain in cascade amplifiers is ___________? Gain of Input Stage Transistor Gain of Output Stage Transistor Product of Individual Amplifiers Gain Gain of Intermediate Stage Amplifier None Hint 7). What happens to bandwidth if the total gain increased in cascade amplifiers? Increases Decreases Constant Remain Same None Hint 8). What is the formula to calculate bandwidth in a cascade amplifier? f_H\sqrt{2^\frac{1}{n}-1} f_H\sqrt{2^\frac{1}{n}} 2^\frac{1}{n} f_H\sqrt{2^\frac{1}{n}+1} None Hint 9). Pair of emitter follower are cascaded to form __________? Direct Couple Indirect Couple Stagger Darlington Pair None Hint 10). Cascading decreases ___________ in amplifiers? Low Cut-off Frequency High Cut-off Frequency Gain a & b None Hint 11). How to calculate the cascade amplifier’s low cut-off frequency? f_{L1}/\sqrt{2^\frac{1}{N}-1} f_{H1}\sqrt{2^\frac{1}{N}-1} f_{L1}\sqrt{2^\frac{1}{n}-1} \sqrt{2^\frac{1}{n}-1} None Hint 12). Calculate the total gain if RC-coupled two-stage amplifiers with individual gains as 40 and 30? 600 1200 1800 2400 None Hint 13). What configuration is widely preferred in cascading amplifiers? Common Emitter Common Base Common Collector Common Source None Hint 14). What do the middle stages of any cascade amplifiers provide? Majority Voltage Gain Shifting DC Level Signal Convert Signal to Single-end Mode All Mentioned Above None Hint 15). What is the final stage of cascade amplifiers providing? Low Resistance at Output Provides Current Required Majority Voltage Gain a & b None Hint 16). _____________ of next stages is load of a present stage in a Cascade amplifier? Voltage Gain Power Gain Input Impedance Output Impedance None Hint 17). What should be avoided in the next stage of input of a Cascade amplifier? Current DC Voltage Temperature Heat None Hint 18). What is provided among stages of the Cascade amplifier to keep voltage loss minimal? Coupling Wiring Transistors Antenna None Hint 19). What is the various coupling used while cascading? RC Coupling Direct Coupling Transformer Coupling All Mentioned Above None Hint 20). __________ have excellent response of frequency in range of audio frequencies? RC Coupling Direct Coupling Transformer Coupling Decoupling None Hint 21). What is the downside of using RC coupling in any cascade amplifiers? Limited Lower Frequency Poor Impedance Matching Unlimited Lower Frequency a & b None Hint 22). What type of coupling is used in Power amplifiers while cascaded? RC Coupling Direct Coupling Transformer Coupling Decoupling None Hint 23). What is considered the drawback of transformer coupling used while cascading? Limited Lower Frequency Poor Impedance Matching Unlimited Lower Frequency Poor Frequency Response None Hint 24). What coupling is used in operational and differential amplifiers? RC Coupling Direct Coupling Transformer Coupling Decoupling None Hint 25). What are the configurations used in a Cascade amplifier? CE-CB CE-CC CC-CC CE-CE None Hint Cascade Amplifier MCQs for Exams 26). Narrow-band frequencies are amplified at centered frequency using __________? Cascode Circuits RC Circuits Transformer Cascade Circuits Direct Cascaded None Hint 27). Two single-tuned amplifiers cascaded forms __________? Double Tuned Amplifier Stagger Tuned Amplifier Power Amplifiers Direct Cascade Amplifiers None Hint 28). Flat wide-band characteristics are obtained using ____________ amplifiers? Double Tuned Amplifier Stagger Tuned Amplifier Power Amplifiers Direct Cascade Amplifiers None Hint 29). For two stages identical cascaded with \omega_H\ as the upper frequency of cut-off, Calculate total frequency? (0.64)\omega_H \omega_H 0 Infinite None Hint 30). How to calculate the total gain of cascading amplifiers? Voltage Gain First Stage (dB) Product of Individual Gains (dB) Sum of Individual Gains (dB) Voltage Gain Last Stage (dB) None Hint 31). A CE configuration coupled with a capacitor has two stages and each stage's voltage gain is 1000. If the gain in every stage gets dropped for 3 decibels of lower-frequency cut-off. Calculate its total gain? 100 dB 131 dB – 100 dB – 131 dB None Hint 32). Two amplifiers cascaded leads to _________? Reduced Total Gain Increased Overall Gain Decreased Bandwidth b & c None Hint 33). Voltage gains of present stage decreased due to impedance at the input of upcoming stage is referred to as ________? Miller Effect Loading Effect Coupling Effect Decoupling Effect None Hint 34). Amplifiers with medium and low resistances are cascaded referred to as _______? Interacting Amplifiers DC Amplifiers Differential Amplifiers Cascode Amplifiers None Hint 35). What coupling is used to amplify the signal having components ranging from 0 to 20 Hertz? RC Coupling Direct Coupling Transformer Coupling Decoupling None Hint 36). Which coupling has a good response of frequency? RC Coupling Direct Coupling Transformer Coupling Decoupling None Hint 37). What does a Darlington amplifier consist of? CE-CB CE-CC CS-CG CC-CC None Hint 38). What are the various advantages of Darlington amplifiers? Increased Input Impedance Decrease Output Impedance a & b Decreases Input Impedance None Hint 39). What increases the output of the amplifier to achieve specific requirements? Interacting Amplifiers DC Amplifiers Differential Amplifiers Cascade Amplifiers None Hint 40). What provides higher current or voltage gains? Interacting Amplifiers DC Amplifiers Differential Amplifiers Cascade Amplifiers None Hint Cascode Amplifier MCQs for Students 41). Cascade FET amplifier is the combination of _________ configuration? CS-CD CS-CG CS-CS CD-CG None Hint 42). What is used for Wide-band amplification? Cascade Amplifiers DC Amplifiers Differential Amplifiers Cascode Amplifiers None Hint 43). Miller effect in cascading amplifier is _________? Infinite Severe Moderate Negligible None Hint 44). What is used as a High-frequency amplifier? Cascade Amplifiers DC Amplifiers Differential Amplifiers Cascode Amplifiers None Hint 45). Increased stages numerously in a Cascade amplifier leads to reduced ________? Gain Voltage Bandwidth Power None Hint 46). What are the various advantages of a cascade amplifier? Increased Gain High Input Impedance High Output Impedance All Mentioned Above None Hint 47). What is the range of Noise figure of a Cascade amplifier? 1-10 Hertz 1-10 K Hertz 1-10 M Hertz 1-10 G Hertz None Hint 48) . Tuned amplifiers are _____________? RC Cascaded Amplifier Direct Cascaded Amplifiers Transformer Cascaded Amplifiers Optical Cascaded Amplifiers None Hint 49). At what situations cascading amplification is preferred? Longer Distances Electronic Controlling Television All Mentioned Above None Hint 50). How cascode amplifiers differ from cascade amplifiers? Transistors Connected in Series Transistors connected in Parallel Transistors Connected in Series and Parallel Single Transistor is Present None Hint For More MCQs Tuned Amplifier Question & Answers. Instrumentation Amplifier Question & Answers. Differential Amplifier Question & Answers. Class D Amplifier Question & Answers. Power Amplifier Question & Answers. Low Noise Amplifier Question & Answers. Cascode Amplifier Question & Answers. Positive Feedback Amplifier Question & Answers. 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