#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….?
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