Basic Electronics

MCQ – Basic Electronics

 

#1. The barrier potential of a silicon transistor is…?

#2. For an NPN transistor, if the base emitter junction is in forward biased and base collector junction is reverse biased, then the mode of operation is called….?

#3. The output of half wave rectifier is….?

#4. A PN junction is a…..?

#5. The temperature coefficient of intrinsic semiconductor is….?

#6. Which of the following material is a semi conductor?

#7. A semiconductor generally has …… valence electrons?

#8. A 0 K, an intrinsic semi conductor behaves as a….?

#9. The process of adding impurities into pure semiconductor called….?

#10. The voltage where avalanche occurs is called…..?

#11. The colour code of 1Kohm resistance is….?

#12. If the input supply frequency is 50 Hz, the output ripple frequency of a bridge rectifier is….?

#13. The PIV of a half wave rectifier circuit with a shunt capacitor filter is….?

#14. In the collector configuration, the collector characterisitics is used to find…?

#15. A BJT amplifier operates in the …. region?

#16. The maximum efficiency of a class A amplifier is …..%

#17. A bistable multi vibrator is a …. oscillator?

#18. Which one of them is not a semiconductor?

#19. An SCR is a ….. layer device?

#20. The pottential difference across a PN junction is referred as…..?

#21. SCR is turn off by reducing…?

#22. Which of the following is to added to a intrinsic semiconductor to form P type semiconductor?

#23. The diode used for voltage regulation is called….?

#24. The phenomenoa which causes reverse break down in zener diode is known as….?

#25. In a transistor, the width of collector layer is…?

#26. In a transistor the ratio of Ic/Ib is called….?

#27. For a half wave rectifier the ripple factor is….?

#28. For a half wave rectifier the ripple factor is….?

#29. For n type semiconductor, the doping material is…?

#30. An inverter converts…?

#31. Current flow in semiconductor depends on the phenomenon…?

#32. The width of depletion layer of a PN jucnction…?

#33. The ratio of collector current to emitter current of a transistor is 0.99. What is the ratio of collector current to base current?

#34. What is the peak to peak voltage of 250V AC is…..?

#35. A full wave bridge rectifier uses ….. diodes?

#36. The heavily dopped region of bipolar junction transistor is….?

#37. Electron volt is the unit of…?

#38. When both higher voltage and higher current are required, cells may be joined in…?

#39. In a full wave rectifier, the peak inverse voltage per diode is….?

#40. What is CDMA?

#41. Octal equivalent of decimal 51 is….?

#42. In a T flip flop, ratio of frequency of the input pulse to the frequency of out put pulse is….?

#43. The transistor amplifier stage has lowest input impedance in….?

#44. The function of a filter in a rectifier is to….?

#45. Register that is used to hold the memory address of the next instruction to be executed….?

Previous
Finish

Results

error: Content is protected !!