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• Electronic Technician Test Study Guide

Transistors, or converters. This rectifying process can take on many forms with half-wave, full-wave, uncontrolled and fully-controlled rec. Power Electronics. May 20, 2014 - Practice your knowledge of electronics - increase your score! Electronics practice questions similar to questions on the ASVAB. Electronics for Absolute Beginners, Study Guide, Chapter 1: Hi, I am Kareen, I am a. More specifically, the Basic Law of Electrical Charges holds that Opposite.

50-Questions TEST Answer the following. JavaScript is required! This is a simple test to see how much you know about basic electronics. 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 5% 2k2 5% 220R 5% 22R 5% 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 2k3 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 26. A capacitor and coil in parallel is called: A Tuned Circuit A Timing Circuit A Delay Circuit A Schmitt Circuit 27. When the base is raised, the emitter will: Rise Fall Remain Fixed Oscillate 28. What is 1,000p? 0.01n 0.0001u 0.1n 1n 29.

The current in a circuit is 45mA. This is: 0.045Amp 0.00045A 0.0045A 0.45A 30. A 100n capacitor can be expressed as: 0.1u u = microfarad 0.01u 0.001u none of the above 31. 1mA is equal to: 0.001A 0.00001A 0.01A 0.1A 32. 1,200mV is equal to: 12v 1.2v 0.12v 0.0012v 33. If a 10k resistor is placed across a 10v supply, the current will be: 10mA 1mA 0.01mA 0.1mA 34. This arrangement is called: Common Emitter Common Collector/Emitter Follower Common Base 35.

Electronic Technician Test Study Guide

Identify the correctly connected LED: A B C D 36. Identify the correct statement: The cathode lead is longer. It goes to the negative rail The cathode lead is shorter. It goes to the negative rail The cathode lead is shorter. It goes to the positive rail The cathode lead is longer. It goes to the positive rail 37.

The current requirement of a LED is: 1.7mA 25mA Between 3 and 35mA 65mA 38. The signal at the collector will be. With the base. The purpose of the capacitor: To pass AC on the input to the base To allow the transistor to self-bias Block DC from the input line To allow the stage to operate 40. The direction of conduction for a diode is: A B C 41. A DC voltage. Rises and falls is a sinewave remains constant is an audio waveform 42.

A CRO is a Cathode Ray Oscillator Cathode Ray Oscilloscope Capacitor-Resistor Oscillator Capacitor-Resistor Output 43. These jargon terms mean: (Jargon = language peculiar to a 'mickey' 'electro' 'cap' 'puff'; trade) mighty, electronic, capper, picofarad microfarad, electronic, capacitor, picofarad microfarad, electrolytic, capacitor, picofarad microfarad, electrolyte, capping, blow 44. The tolerance bands: gold; silver; brown, represent: 10%, 5%, 1% 5%, 10%, 2% 5%, 10%, 1% 10%, 5%, 2% 45.

223 on a capacitor represents: 0.022u u = microfarad 22n n = nanofarad 22,000p p = picofarad All of the above 46. Arrange these in ascending order: n, p, u p, u, n, n, u, p p, n, u 47.

Name this symbol: A buffer A NOR gate A NAND gate A Schmitt Trigger 48. The number '104' on a capacitor indicates: 0.1u 100n 1n 10n 49. What is the multimeter detecting: The output voltage of the Schmitt Trigger The delay across the capacitor The voltage across the capacitor The current through the capacitor 50.

For the XOR gate, what is the output when both inputs are HIGH: HIGH LOW Can be HIGH or LOW Cannot be determined.