<!-- Begin var ans = new Array; var done = new Array; var score = 0; ans\[1\] = "Light Emitting Diode"; ans\[2\] = "Collector Base Emitter"; ans\[3\] = "A short circuit"; ans\[4\] = "1.7v"; ans\[5\] = "Higher"; ans\[6\] = "4k4"; ans\[7\] = "Higher"; ans\[8\] = "Not enough information -It may be PNP or NPN!"; ans\[9\] = "Load Resistor"; ans\[10\] = "110n"; ans\[11\] = "2k2 _ _ 5%"; ans\[12\] = "The Emitter"; ans\[13\] = "5k"; ans\[14\] = "PNP Transistor"; ans\[15\] = "0v - The batteries are back-to-back!"; ans\[16\] = "3R3 4R7 22R 5k6"; ans\[17\] = "2k2"; ans\[18\] = "Common Emitter"; ans\[19\] = "Capacitor, Microphone, Potentiometer, Electrolytic"; ans\[20\] = "200n"; ans\[21\] = "Base Bias Resistor"; ans\[22\] = "Timing Circuit/Delay Circuit"; ans\[23\] = "35,200 ohms"; ans\[24\] = "Photo darlington transistor, reed switch, piezo, coil"; ans\[25\] = "Series"; function Try(question, answer) { if (answer != ans\[question\]) { if (!done\[question\]) { done\[question\] = -1; window1=window.open("", "NewWindow1", "toolbar=no,directories=no,menubar=no,scrollbars=no,top=475,left=25,width=320,height=20"); window1.document.writeln("<title>Answers to: 25 QUESTIONS . . . . </title>"); window1.document.writeln("<font face=Arial size=2 color=#FF00cc><center>Wrong!\\n\\nYour score is now: " + score + "<font face=Arial size=2 color=#cc0000><center>The correct answer is: <font face=Arial size=2 color=#000000>" + ans\[question\]); } else { alert("You have already answered that question"); } } else { if (!done\[question\]) { done\[question\] = -1; score++; alert("Correct!\\n\\nYour score is now: " + score); } else { alert("You have already answered that question"); } } } function Assessment () { if (score >= 25) { alert("Perfect Score!"); } if (score >= 20 && score <= 29) { alert("Excellent Work - but not Perfect!") } if (score >= 0 && score <= 19) { alert("You need to do the BASIC ELECTRONICS COURSE. \\nYou will be amazed at how much you will learn.") } } // End -->

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Answer the following questions … JavaScript is required!
This test sees how much you know about basic electronics.

1. What does LED stand for?

• Light Emitting Display
• Low Energy Display
• Light Emitting Diode
• Light Emitting Detector

2. Name the three leads of a common transistor

• Collector Bias Omitter
• Base Collector Case
• Emitter Collector Bias
• Collector Base Emitter

3. Connecting a lead from the negative to the positive of a battery will produce:

• A high resistance circuit
• A short circuit
• A low current path
• An open circuit

4. What is the approximate characteristic voltage that develops across a red LED?

• 1.7v
• 3.4v
• 0.6v
• 5v

5. If two resistors are placed in series, is the final resistance:

• Higher
• Lower
• The same
• Cannot be determined

6. Which is not a “common” value of resistance:

• 2k7
• 1M8
• 330R
• 4k4

7. If a small value of capacitance is connected in parallel with a large value, the combined capacitance will be:

• The same
• Higher
• Lower

8. If the voltage on the base of a transistor increases, does it:

• Turn on
• Turn off
• Not enough information
• Remain the same

9. The resistor identified in brown is called the:

• Base Bias Resistor
• Load Resistor
• Emitter Feedback Resistor
• Bypass Resistor

10. A 100n capacitor in parallel with 10n produces:

• 90n
• 100n
• 110n
• Cannot be determined

11. A resistor with colour bands: red-red-red-gold, has the value:

• 22k 10%
• 2k2 5%
• 220R 10%
• 22R 5%
• 2k2 10%

12. The lead marked with the arrow is:

• The Collector
• The Base
• The Emitter
• The case

13. A 10k resistor in parallel with 10k produces:

• 10k
• 5k
• 20k
• Cannot be determined

14. The symbol is:

• NPN Transistor
• PNP Transistor
• Photo Transistor
• Field Effect Transistor

15. Two 3v batteries are connected as shown. The output voltage is:

• 3v
• 0v
• 6v

16. 4 resistors in ascending order are:

• 22R 270k 2k2 1M
• 4k7 10k 47R 330k
• 3R3 4R7 22R 5k6
• 100R 10k 1M 3k3

17. The closest value for this combination is:

• 4k7
• 2k2
• 9k4

18. This stage is called:

• Common Base
• Common Collector
• Common Emitter
• Emitter Follower

19. The four symbols are:

• Capacitor, Microphone, Potentiometer, Electrolytic
• Electrolytic, Microphone, Resistor, Capacitor
• Capacitor, Piezo, Resistor, Electrolytic
• Electrolytic, Coil, Resistor, Capacitor

20. The value of the combination is:

• 100n
• 200n
• 50n

21. The resistor marked in red is:

• Base Bias Resistor
• Load Resistor
• Emitter Feedback Resistor
• Bypass Resistor

22. A resistor and capacitor in series is called a:

• Pulse Circuit
• Timing Circuit/Delay Circuit
• Oscillator Circuit/Frequency Circuit
• Schmitt Circuit

23. A red-red-red-gold resistor in series with an orange-orange-orange-gold resistor produces:

• 5k5
• 35,200 ohms
• 55k
• None of the above

24. Name the 4 components:

• Photo transistor, switch, capacitor, coil
• Transistor, mercury switch, piezo, coil
• Photo transistor, reed switch, piezo, coil
• Photo darlington transistor, reed switch, piezo, coil

25. To obtain a higher value of resistance, resistors are connected in:

• Reverse
• Forward
• Parallel
• Series

These are the types of questions you should be able to answer INSTANTLY, if you want to design and build microcontroller projects. If you get less than 20, now’s the time to do the Basic Electronics Course. Try the test again after the course, I’m sure you will “fly” through the answers and be amazed at how much you have learnt.