Question: A transistor has two p-n junctions. The batteries should be connected such that [A]. both junctions are forward biased [B]. both junctions are reverse biased [C]. one junction is forward biased and the other is reverse biased [D]. either…
Question: As compared to a BJT amplifier circuit, a JFET amplifier circuit [A]. has low input impedance [B]. has high input impedance [C]. has very low input impedance [D]. may have either low or high input impedance Answer: Option B…
Question: At midband frequencies the coupling capacitor in RC coupled CE amplifier may be considered as [A]. open circuit [B]. short circuit [C]. a reactance equal to load resistance [D]. none of the above Answer: Option B Explanation: No answer…
Question: A transistor amplifier is operating in class A mode. If a transformer is connected for impedance matching, the efficiency will [A]. increase [B]. decrease [C]. not be affected [D]. increase or decrease Answer: Option A Explanation: No answer description…
Question: If the midband gain of an amplifier is 40 dB, the gain at half power frequency is [A]. 37 dB [B]. 30 dB [C]. 20 dB [D]. 13 dB Answer: Option A Explanation: Half power frequency is -3 dB…
Question: A push pull amplifier is a [A]. power amplifier [B]. voltage amplifier [C]. current amplifier [D]. both power and current amplifier Answer: Option A Explanation: No answer description available for this question.
Question: For class B operation the theoretical maximum efficiency is [A]. 100% [B]. 78.5% [C]. 50% [D]. 27.5% Answer: Option B Explanation: No answer description available for this question.
Question: In class C operation of an amplifier circuit, the collector current exists for [A]. 360° of input wave [B]. 180° of input wave [C]. more than 180° of input wave [D]. less than 180° of input wave Answer: Option…
Question: In the analysis of common emitter amplifier we may neglect [A]. hre [B]. hoe [C]. hfe [D]. hie Answer: Option A Explanation: No answer description available for this question.
Question: In the graphical analysis of an amplifier circuit, the slope of dc load line depends on [A]. load resistance only [B]. collector supply voltage only [C]. both load resistance and collector supply voltage [D]. none of the above Answer:…