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- NAME:__________________________________ 115 Possible Points
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-
- ELECTRONICS REVIEW EXAM #1
- ================================================================
-
- 1. There are two kinds of electricity (current). (6 points)
- A. _____________ B. ______________
- The type of current that has frequency is ___________ .
- The type of current that should not have frequency is ______.
- "Ripple" is an unwanted source of_____________. It is
- eliminated by regulators and/or_______________ capacitors.
-
- 2. In order for electricity to do any work (energy) the electrons
- must be _______________ by a generator or battery and flow in a
- complete ______________ . Most electronic devices like stereos,
- television sets, recorders, etc. convert _______ voltage to
- voltage to make it more manageable. This is usually done with
- devices called ______________ . (5 points)
-
- 3. Define a LINEAR RELATIONSHIP and give an example.
-
- __________________________________________ . (5 points)
-
- 4. Resistors are devices used to control the amount of ___________
- that will flow in a circuit. Their values are identified using the
- term _______ after the name of the man who discovered the devices.
- (2 points)
- The resistor color code is used to identify the value of a
- resistor. Write the color value for the number given. (1 point
- each)
-
- 0 = 5 =
- 1 = 6 =
- 2 = 7 =
- 3 = 8 =
- 4 = 9 =
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- 5. Using the OHM'S LAW calculate the following: (1 point each)
-
- A. If R=1200 and I=12 solve for E.
- B. If E=120 and R=35 solve for I.
- C. If I=10 and R=33 solve for E.
- D. If E=50 and I=51 solve for R.
-
- 6. The fourth color band on a resistor determines the _________
- of the resistor. (1 point)
-
- 7. ConEdison provides homes with ______ volts
- at a frequency of _______ Hz. (3 points)
-
-
- 8. Define RESONANCE.
- _______________________________________________ . (2 points)
-
- 9. Oscillators are used to change ________________ . (1 point)
-
- 10. Television and radio waves are commonly referred to as ______
- or ___________________ and are measured in _________ . (3 points)
-
- 11. In amplifiers we control a _________________________ with a
- __________________ in a ______________ relationship. (5 points)
-
- 12. Comparing transistors and tubes identify the corresponding
- parts: (1 point each)
-
- A. BASE = ____________ B. GRID = _____________
- C. EMITTER = ____________ D. COLLECTOR = _____________
-
- 13. The transistor was invented by _____________ ,____________ ,
- ______________ at Bell Laboratories in 1947. (3 points)
-
- 14. There are basically two types of transistors. Name them. (2
- points)
-
- A. ______________ B. ______________
-
- 15. NPN and PNP transistors are _____________ types. FET or JFET
- transistors are _____________ types. ( 2 points)
-
- 16. There are basically two types of integrated circuits. Name
- them. (2 points)
-
- A. _________________ B. ___________________
-
- 17. An ____________________ is made up of many components on a
- silicon substrate and can be used as amplifiers or variable
- filters. The feedback loop determines the _________ of this device.
- (2 points)
-
- 18. The measuring stick for capacitors is _____________ . They have
- the ability to pass ____________ and store ___________ for a
- given amount of time which is determined by the value in
- ___________ . (4 points)
-
- 19. Draw the schematic for a full wave bridge rectifier assembly
- and label the polarities, voltages and components. ( 5 points)
-
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- 20. Discuss, IN DETAIL, how a color television picture tube works.
-
-
-
-
- . (10 points)
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- 21. Draw the schematic symbols for the following components. ( 1
- point each)
-
- 1. Resistor 2. Potentiometer 3. Battery
-
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- 4. NPN transistor 5. PNP transistor 6. Capacitor
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- 7. Ground 8. SPST switch 9. Iron core transformer
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- 10. Antenna 11. Diode 12. Fuse
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