Common Emitter Amplifier Question & Answers October 18, 2022 By WatElectronics This article lists 30 Common Emitter Amplifier MCQs for engineering students. All the Common Emitter 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 Common Emitter Amplifier. Amplifiers in electronic circuits are known to enhance weaker signals. This is done by increasing the current, voltage, or power of applied signals. The only constraint is to enhance the amplitude of the signal without altering its shape. For any amplifier, the transistor is an essential part of the circuit. Transistor used can be a BJT or a FET. These are classified into various configurations based on their characteristics. In any circuit transistor as the block appropriate selection of configuration plays a vital role. Based on desired operating point transistors must be biased. Then the signal is applied as the input to the amplifier and achieved gain at the output. Small-signal amplifiers can amplify input signals with lesser distortion obtained in output signals. Signals obtained at the output are the replica of applied signals (amplified or bigger version). Common Emitter is one of the BJTs configurations. It is utilized as a Voltage amplifier. Input for this amplifier is applied at the base and the outcome is collected at the terminal collector. The emitter is common for both output and input. A common Emitter is the most widely preferred configuration in electronic circuits. 1). What is the common terminal in BJTs Common Emitter configuration? Base Collector Emitter Source None Hint 2). What is the input terminal in Common Emitter Amplifier? Base Collector Emitter Source None Hint 3). Which of these is mostly preferred as amplifiers? Common Base Common Emitter Common Collector All Mentioned Above None Hint 4). Inverted signal as outcome obtained in _______ amplifiers? Common Base Common Emitter Common Collector All Mentioned Above None Hint 5). What kind of bias is utilized in Common Emitter Amplifiers? Fixed Bias Collector Feedback Emitter Feedback Voltage Divider Bias None Hint 6). Input terminals of Common Emitter amplifier are ______________?. Base Collector Emitter a & c None Hint 7). _____________ is referred to as Grounded emitter? Common Base Common Emitter Common Collector All Mentioned Above None Hint 8). Common Emitter Amplifiers are utilized for ___________ requirement? Large Current Gain Small Current Gain Large Input Impedance Large Output Impedance None Hint 9). Input characteristics of Common Emitter amplifier resembles ___________? Output Characteristics PN Junction Diode Zener Diode Schottky Diode None Hint 10). ___________ has small input currents in comparison to Common Base amplifiers? Common Collector Common Emitter Common Gate Common Source None Hint Common Emitter Amplifier MCQs for Exams 11). Base region of Common Emitter amplifiers is __________? Doped Lightly Smaller Width Heavily Doped a & b None Hint 12). Collector-Base junction of Common Emitter Amplifier is _________? Forward Bias Reverse Bias Zero Bias Not Biased None Hint 13). What is high in Common Emitter Amplifiers? Input Resistance Output Resistance Current Gain b & c None Hint 14). Current amplification factor of CE amplifier is _________? α β λ ω None Hint 15). How the β is the defined for CE amplifiers? ∆IC/∆IB ∆IB/∆IE ∆IC/∆IE ∆IE/∆IC None Hint Read More About Common Emitter Amplifier 16). How many capacitors for coupling are used in Common Emitter Amplifiers? One Two Three Four None Hint 17). When the capacitors coupled offer higher reactance in CE amplifiers? Low Frequency Mid Frequency High Frequency b & c None Hint 18). When do the coupled capacitors behave short-circuit in CE amplifiers? Low Frequency Mid Frequency High Frequency b & c None Hint 19). _________ amplifiers of Common Emitter configuration can be cascaded to produce an inverted outcome? Four Three Two a & b None Hint 20). At lower frequencies voltage is amplified using _________ amplifiers? Common Base Common Emitter Common Collector All Mentioned Above None Hint Common Emitter Amplifier MCQs for Students 21). What happens if CE amplifiers of odd numbers are cascaded? 0 Phase shift Introduced 180 Phase Shift Introduced 360 Phase Shift Introduced a& c None Hint 22). Bandwidth of CE amplifiers is ________? Low High More Greater None Hint 23). Faint signals received form antenna are amplified using ____________? Common Base Common Emitter Common Collector Can’t Say None Hint 24). Which amplifier has both voltage and current gains? Common Base Common Emitter Common Collector All Mentioned Above None Hint 25). Low noise amplifiers make use of _______________? Common Base Common Emitter Common Collector All Mentioned Above None Hint 26). Which are not the characteristics of a Common Emitter Amplifier? Medium Input Impedance Medium Output Impedance Medium Voltage Gain Medium Current Gain None Hint 27). Phase-shift produced by Common Emitter amplifier is __________? 270 180 90 0 None Hint 28). Which amplifier has the highest power gain? Common Base Common Emitter Common Collector All Mentioned Above None Hint 29). Common Emitter amplifiers have ________ resistance at output? High Low Less Reduced None Hint 30). Common Emitter Amplifier is utilized as ____________? Current Amplifier Voltage Amplifier Power Amplifier b & c None Hint For More MCQs MOSFET Amplifier Question & Answers Cascade Amplifier Question & Answers DC Amplifier Question & Answers 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 Multistage Amplifier Question & Answers Please fill in the comment box below. Time's up
