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Analog And Power Electronics MCQs
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Analog And Power Electronics MCQs
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25 Questions

1. Emission coefficient of Germanium (η) is
2. An SCR conducts appreciable current when its —–with respect to cathode
3. To Compensate increase in diode current with temperature, the diode voltage
4. An electron has
5. In a LC filter, the ripple factor
6. The depletion region in a PN Junction diode is due to
7. Which of the following is not a semiconductor
8. For a operation of PNP amplifier, base of the Amplifier must be
9. A silicon diode has saturation current of 7.5μA at 300K.The saturation current at 400K is
10. The light-emitting diode (LED)
11. GaAs, LEDs emit radiation in the
12. In most transistors,collector is made physically larger than Emitter region
13. The sensitivity of a photodiode depends upon
14. Under normal operating Voltage, Reverse current in a Silicon diode is about
15. The ripple frequency for a full wave rectifier is
16. In an NPN transistor, the arrow indicates current flow from
17. If, by mistake, a.c source in a bridge rectifier, is connected across the d.c. terminals, it will burn out and hence short _____________ diodes.
18. As compared to a LED display, the distinct advantage of an LCD display is that it requires
19. The three terminals of a Bipolar transistor are called
20. The acceptor impurity element is
21. In a NPN transistor, when the emitter junction is reverse biased and the collector junction is reverse biased the transistor will operate in the
22. In a PNP transistor, electrons flow
23. In a PNP transistor with normal bias
24. The disadvantage of a bridge rectifier is
25. Reverse saturation current in a silicon PN junction diode nearly doubles for every

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