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Chapter 5 FUNDAMENTALS OF ELECTRONICS MCQs

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1. . A semiconductor has generally ……………… valence electrons.





2. . When a pentavalent impurity is added to a pure semiconductor, it becomes ……:





3. . A pentavalent impurity has ………. Valence electrons





4. . A hole in a semiconductor is defined as …………….:





5. . A PN junction acts as a ……….





6. . Number of electrons in outer most shell of conducting material is:





7. . In a P-N junction, the potential barrier is due to the charges on either side of the junction. These charges are:





8. . The process of applying an external voltage to diode is called as:





9. . Under normal conditions a diode conducts current when it is…





10. . A filter circuit which converts the pulsating DC of rectifier output into:





11. . The part of DC power supply:





12. . Full wave bridge rectifier circuit has …….diodes.





13. . T filter consists on:





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