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Electrician Practice Test: Basic Electronics
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Electrician Practice Test: Basic Electronics
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25 Questions

1. Which resistor is used to measure light intensity?
2. Why the collector region is physically made larger than emitter region in a transistor?
3. What is the minimum voltage required in the base emitter junction to conduct a silicon transistor?
4. What is the purpose of using binary coded decimal (BCD) system in digital circuits?
5. What defect will occur in the radio, if the pulsations are not removed from the input of the rectifier?
6. What is the name of the symbol?
7. What is the output DC voltage in half wave rectifier, if the input AC voltage is 24 volt?
8. Which is the advanced version of power electronic component used in the output stage in drives?
9. What is the effect of pinch-off voltage in JFET?
10. Which electronic circuit produces signal waves or pulses without an input?
11. What is the main application of uni junction transistor?
12. What is the function of a transistor if emitter to base and collector to base are forward biased?
13. What is the type of amplifier circuit?
14. How does the depletion region behave?
15. Why negative feedback is required in amplifier circuits?
16. Which type of control device is used in electronic fan regulator control circuits?
17. What is the purpose of DIAC in power control circuits?
18. What is the peak voltage of 220v rms AC voltage?
19. Which filter circuit is capable of removing voltage spikes in the rectifier circuit?
20. What is the main advantage of a class A amplifier?
21. What is the difference in current control of MOSFET compared to JFETs?
22. Which device is made up of using the methods of point contact, grown, diffusion and alloy junctions?
23. How the input impedance of CRO can be increased?
24. What is the main function of Uni Junction Transistor (UJT)?
25. Which oscillator provides high accurate stable frequency?

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