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Electrical Engineering - Analog Electronics MCQs
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Electrical Engineering - Analog Electronics MCQs
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25 Questions

1. The current gain of a BJT is
2. A dc power supply has no-load voltage of 30v,and a full-load voltage of 25v at full-load current of 1A. Its output resistance & load regulation ,respectively are
3. An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedbacik factor of 0.2 is
4. In a CB amplifier the maximum efficiency could be
5. Voltage Series feedback also called series-shunt feedback) results in
6. The action of JFET in its equivalent circuit can best be represented as a
7. A change in the value of the emitter resistance Re in a differential amplifier
8. The MOSFET switch in its on-state may be considered equivalent to
9. When a transistor is connected in common emitter mode, it with have
10. An ideal OP-AMP is an ideal
11. Which of the following is not associated with a p-n junction
12. Which of the following amplifier circuit using junction transistor has the best gain?
13. In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db &2db respectively, then its common mode rejection ratio is
14. Which of the following statements is false?
15. In all base driver amplifiers
16. The bandwidth of an RF tuned amplifier is dependent on
17. The most commonly used amplifier in sample & hold circuits is
18. Generally, the gain of a transistor amplifier falls at high frequencies due to the
19. The encapsulation of transistor is necessary for
20. An n- channel JFET has IDSS=2mA,and Vp=-4v.Its transconductance gm=in mA/V)for an applied gate to source voltage VGS=-2v is
21. Thermal runaway is not possible in FET because as the temperature of FET increases
22. MOSFET can be used as a
23. The approximate input impedance of the OPAMP circuit which has Ri=10k,Rf=100k,RL=10k
24. The cascade amplifier is a multistage configuration of
25. If  =0.98 ,Ico=6µA and Iβ=100µA for a transistor,then the value of Ic will be

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