Welcome to Online Test Semester 4, Module 1 -Electronics Practice
Electrician and wireman  2nd Year
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NAME *
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NAME OF THE ITI *
MOBILE NUMBER *
1.Which resistor is used to measure light intensity? *
2 points
2. Which code indicates silicon semiconductor diode? *
2 points
3.What is the input ripple frequency (Fin) of full wave rectifier? *
2 points
4. Which is a active component? *
2 points
5. Which letter indicates the compound material cadmium sulphide? *
2 points
6. What is the name of the symbol? *
2 points
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7. Which is a passive component? *
2 points
8. What is the name of the device symbol? | *
2 points
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9. How many characters are in hexadecimal number system? *
2 points
10. Which electronic circuit generates A.C signal without input? *
2 points
11. Which instrument provides a visual representation of measured or tested quantities? *
2 points
12. What is the minimum voltage required in the base emitter junction to conduct a silicon transistor? *
2 points
13. What is the minimum and maximum value of resistor with four colour bands, red, violet, orange and gold respectively? *
4 points
14. Which filter circuit is capable of removing voltage spikes in the rectifier circuit? *
2 points
15.Which quantity can be measured by CRO? *
2 points
16.TRIAC motor control circuit? *
2 points
17. Which quadrant operation of SCR delivers heavy current in reverse biasing? *
2 points
18. Which doping material is used to make P-type semi conductor? *
2 points
19. What is the criteria to decide a material as conductor, semi conductor and insulator? *
2 points
20.Which is the main application of SCR? *
2 points
21. Which is the advanced version of power electronic component used in the output stage in drives? *
2 points
22. What is the purpose of using binary coded decimal (BCD) system in digital circuits? *
4 points
23. What is the formula to calculate the resonance frequency in an oscillator circuit? *
4 points
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24. What is the reason for barrier voltage is more in silicon material? *
4 points
25. How the decimal number can be converted into binary number? *
4 points
26. What is the characteristic property of base material in a transistor? *
2 points
27. What is the output DC voltage in half wave rectifier, if the input AC voltage is 24 volt? *
2 points
28. Which oscillator provides high accurate stable frequency? *
2 points
29. Which type of control device is used in electronic fan regulator control circuits *
2 points
30.What is the type of function in the transistor circuit *
2 points
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31. Why negative feedback is required in amplifier circuits *
2 points
32. What is the use of time-base control switch or knob in the CRO? *
2 points
33. What is the type of amplifier? *
2 points
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34. What is the output voltage if the center tap of transformer is open circuited in a full wave rectifier circuit? *
2 points
35. What is the main application of a Field Effect Transistor (FET)? *
2 points
36.What is the main function of Uni Junction Transistor (UJT)? *
2 points
37. Why a feedback network is used in the oscillator? *
2 points
38. Which multi vibrator produces a repetitive pulse wave form output? *
2 points
39.Which electronic circuit produces signal waves or pulses without an input? *
2 points
40.What is the effect of pinch-off voltage in decrease JFET? *
2 points
41.What is the power gain of CE amplifier with a voltage gain of 66 and  (Beta) of the transistor is 100? *
2 points
42. What is the frequency of the displayed signal on CRO screen covered by 5 division with a time base setting of 0.2 micro seconds? *
2 points
43. What is the main application of uni junction  transistor? *
2 points
44.Why the collector region is physically made larger than emitter region in a transistor? *
2 points
45. What is the main advantage of a class A -amplifier ? *
2 points
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