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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 rectified sine wave, 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....?
#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....?
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